It has 161 speed so, in OU, only Talonflame, Greninja, Gachomp Alakazam outspeed it and only Garchomp and Alakazam can OHKO it.
Not quite. It speed ties with positive speed natured base 95's, so the list of things that outspeed it are considerably higher. Talonflame is also a clean 1HKO with Flare Blitz, Greninja is an easy 2HKO so Heliolisk can't switch into it.
252+ SpA Life Orb Solar Power Heliolisk Focus Blast vs. 252 HP / 4 SpD Mamoswine in Sun: 382-452 (176 - 208.2%) -- guaranteed OHKO
252+ Atk Mamoswine Earthquake vs. 4 HP / 0 Def Heliolisk: 606-714 (227.8 - 268.4%) -- guaranteed OHKO
252+ Atk Mamoswine Icicle Crash vs. 4 HP / 0 Def Heliolisk: 256-303 (96.2 - 113.9%) -- 75% chance to OHKO
252+ Atk Mamoswine Ice Shard vs. 4 HP / 0 Def Heliolisk: 121-144 (45.4 - 54.1%) -- guaranteed 2HKO after Solar Power damage
Heliolisk has to come in on Stealth Rock or it can't switch in.
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 252 HP / 4 SpD Azumarill in Sun: 346-408 (167.1 - 197.1%) -- guaranteed OHKO
252+ Atk Huge Power Azumarill Play Rough vs. 4 HP / 0 Def Heliolisk: 301-355 (113.1 - 133.4%) -- guaranteed OHKO
252+ Atk Huge Power Azumarill Superpower vs. 4 HP / 0 Def Heliolisk: 534-630 (200.7 - 236.8%) -- guaranteed OHKO
Heliolisk needs to come in on a water type attack or it can't switch in.
252+ SpA Life Orb Solar Power Heliolisk Focus Blast vs. 252 HP / 4 SpD Donphan in Sun: 191-226 (96.9 - 114.7%) -- 81.3% chance to OHKO
0 Atk Donphan Earthquake vs. 4 HP / 0 Def Heliolisk: 422-500 (158.6 - 187.9%) -- guaranteed OHKO
Heliolisk needs to come in on Rapid Spin or Stealth Rock or it can't switch in.
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 4 HP / 0 SpD Greninja in Sun: 385-455 (260.1 - 307.4%) -- guaranteed OHKO
252 SpA Life Orb Protean Greninja Ice Beam vs. 4 HP / 0 SpD Heliolisk: 172-203 (64.6 - 76.3%) -- guaranteed 2HKO after Solar Power damage
252 SpA Life Orb Greninja Dark Pulse vs. 4 HP / 0 SpD Heliolisk: 153-181 (57.5 - 68%) -- guaranteed 2HKO after Solar Power damage
0- Atk Life Orb Protean Greninja U-turn vs. 4 HP / 0 Def Heliolisk: 142-169 (53.3 - 63.5%) -- guaranteed 2HKO after Solar Power damage
252 SpA Life Orb Greninja Hydro Pump vs. 4 HP / 0 SpD Heliolisk in Sun: 103-122 (38.7 - 45.8%) -- 14.5% chance to 2HKO after Solar Power damage
2HKO'd by pretty much everything (even Hydro Pump when you consider Life Orb recoil too), so given Greninja outspeeds, Heliolisk can't switch in.
252+ SpA Life Orb Solar Power Heliolisk Hidden Power Fire vs. 4 HP / 0 SpD Excadrill in Sun: 278-328 (149.4 - 176.3%) -- guaranteed OHKO
252+ Atk Mold Breaker Excadrill Earthquake vs. 4 HP / 0 Def Heliolisk: 624-734 (234.5 - 275.9%) -- guaranteed OHKO
Heliolisk has to take a risk to switch in.
252+ SpA Life Orb Solar Power Heliolisk Hidden Power Fire vs. 252 HP / 0 SpD Ferrothorn in Sun: 348-411 (192.2 - 227%) -- guaranteed OHKO
4 Atk Ferrothorn Power Whip vs. 4 HP / 0 Def Heliolisk: 208-246 (78.1 - 92.4%) -- guaranteed 2HKO after Solar Power damage
I'll give you this one. To be fair though, pretty much everything 1HKOs Ferrothorn with HP Fire... especially in sun. Though it runs the risk of being KO'ed by the combination of Solar Power and Life Orb recoil after a Power Whip.
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 252 HP / 0 SpD Klefki in Sun: 165-195 (100.6 - 118.9%) -- guaranteed OHKO
Yeah I'll give you this one. Klefki's job is just to set up screens anyway though so eh. It's not a huge threat.
252+ SpA Life Orb Solar Power Heliolisk Hidden Power Fire vs. 252 HP / 4 SpD Mega Mawile in Sun: 205-242 (130.5 - 154.1%) -- guaranteed OHKO
252+ Atk Huge Power Mega Mawile Play Rough vs. 4 HP / 0 Def Heliolisk: 468-552 (175.9 - 207.5%) -- guaranteed OHKO
252+ Atk Huge Power Mega Mawile Sucker Punch vs. 4 HP / 0 Def Heliolisk: 277-327 (104.1 - 122.9%) -- guaranteed OHKO
It can't switch into Play Rough, and it's 1HKO'd by Sucker Punch so it gets screwed regardless.
252+ SpA Life Orb Solar Power Heliolisk Hidden Power Fire vs. 252 HP / 4 SpD Mega Scizor in Sun: 385-458 (217.5 - 258.7%) -- guaranteed OHKO
252+ Atk Mega Scizor U-turn vs. 4 HP / 0 Def Heliolisk: 235-277 (88.3 - 104.1%) -- 25% chance to OHKO
25% chance to 1HKO with U-Turn so switching in can be risky. Like Ferrothorn though, being able to KO something 4x weak to fire (in sun no less) is not unique to Heliolisk.
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 4 HP / 0 SpD Talonflame in Sun: 393-463 (255.1 - 300.6%) -- guaranteed OHKO
252+ Atk Talonflame Flare Blitz vs. 4 HP / 0 Def Heliolisk: 264-312 (99.2 - 117.2%) -- 93.8% chance to OHKO
It can't switch in, and Talonflame is going to kill it regardless due to outspeeding it.
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 0 HP / 4 SpD Starmie in Sun: 330-393 (244.4 - 291.1%) -- guaranteed OHKO(can't outspeed, but can OHKO and can't be OHKOed)
252 SpA Life Orb Starmie Surf vs. 4 HP / 0 SpD Heliolisk: 168-199 (63.1 - 74.8%) -- guaranteed 2HKO
252 SpA Life Orb Starmie Ice Beam vs. 4 HP / 0 SpD Heliolisk: 112-133 (42.1 - 50%) -- 88.3% chance to 2HKO after Solar Power damage
It runs a risk by switching in due to the 2HKOs and outspeeding.
252+ SpA Life Orb Heliolisk Focus Blast vs. 252 HP / 4 SpD Tyranitar in Sand: 234-276 (113 - 133.3%) -- guaranteed OHKO
252+ Atk Tyranitar Stone Edge vs. 4 HP / 0 Def Heliolisk: 309-364 (116.1 - 136.8%) -- guaranteed OHKO
252+ Atk Tyranitar Crunch vs. 4 HP / 0 Def Heliolisk: 247-292 (92.8 - 109.7%) -- 56.3% chance to OHKO
It runs a big risk switching in. Also, Scarf Tyranitar says hi.
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 252 HP / 0 SpD Mandibuzz in Sun: 307-361 (141.4 - 166.3%) -- guaranteed OHKO
This one's kind of a given though Heliolisk doesn't like getting its Life Orb knocked off on the switch.
252+ SpA Life Orb Solar Power Heliolisk Hidden Power Fire vs. 0 HP / 4 SpD Lucario in Sun: 257-304 (177.2 - 209.6%) -- guaranteed OHKO
252 Atk Lucario Close Combat vs. 4 HP / 0 Def Heliolisk: 588-692 (221 - 260.1%) -- guaranteed OHKO
252 Atk Lucario Extreme Speed vs. 4 HP / 0 Def Heliolisk: 131-155 (49.2 - 58.2%) -- guaranteed 2HKO after Solar Power damage
And of course...
252 Atk Mega Lucario Crunch vs. 4 HP / 0 Def Heliolisk: 159-188 (59.7 - 70.6%) -- guaranteed 2HKO after Solar Power damage
252 SpA Adaptability Mega Lucario Vacuum Wave vs. 4 HP / 0 SpD Heliolisk: 196-232 (73.6 - 87.2%) -- guaranteed 2HKO after Solar Power damage
252 Atk Mega Lucario Extreme Speed vs. 4 HP / 0 Def Heliolisk: 159-188 (59.7 - 70.6%) -- guaranteed 2HKO after Solar Power damage
Switching into Lucario/Mega Lucario is a daunting prospect for Heliolisk which runs a huge risk.
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 4 HP / 0 SpD Volcarona in Sun: 140-165 (86.9 - 102.4%) -- 18.8% chance to OHKO
252 SpA Life Orb Volcarona Bug Buzz vs. 4 HP / 0 SpD Heliolisk: 208-246 (78.1 - 92.4%) -- guaranteed 2HKO
252 SpA Volcarona Fiery Dance vs. 4 HP / 0 SpD Heliolisk in Sun: 213-252 (80 - 94.7%) -- guaranteed 2HKO after Solar Power damage
Heliolisk can't switch into Timid Volcarona under any circumstances since it outspeeds. It also has problems with Modest variants who Quiver Dance on the switch.
252+ SpA Life Orb Solar Power Heliolisk Hidden Power Fire vs. 252 HP / 4 SpD Aegislash-Blade in Sun: 330-390 (197.6 - 233.5%) -- guaranteed OHKO
252+ Atk Aegislash-Blade Sacred Sword vs. 4 HP / 0 Def Heliolisk: 404-476 (151.8 - 178.9%) -- guaranteed OHKO
While it can switch into the ghost type attacks, Sacred Sword will murder it, making it a risk. Plus, we could also consider...
252+ SpA Life Orb Solar Power Heliolisk Hidden Power Fire vs. 252 HP / 4 SpD Aegislash-Shield in Sun: 265-312 (81.7 - 96.2%) -- guaranteed 2HKO
So Aegislash can, albeit unreliably, revenge kill it.
252+ SpA Life Orb Solar Power Heliolisk Focus Blast vs. 252 HP / 4 SpD Blissey in Sun: 200-237 (55.2 - 65.4%) -- guaranteed 2HKO after Leftovers recovery
I'll give you this one since Blissey doesn't threaten it back, although a 2HKO with Focus Blast isn't quite the guarantee.
252+ SpA Life Orb Solar Power Heliolisk Hidden Power Fire vs. 4 HP / 0 SpD Breloom in Sun: 294-346 (216.1 - 254.4%) -- guaranteed OHKO
252 Atk Life Orb Technician Breloom Mach Punch vs. 4 HP / 0 Def Heliolisk: 432-510 (162.4 - 191.7%) -- guaranteed OHKO
It can't switch in. Also, priority says hi.
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 4 HP / 0 SpD Charizard in Sun: 330-393 (214.2 - 255.1%) -- guaranteed OHKO
252 SpA Charizard Fire Blast vs. 4 HP / 0 SpD Heliolisk in Sun: 252-297 (94.7 - 111.6%) -- 68.8% chance to OHKO
Timid Charizard outspeeds, so it can't switch in. Plus, if we consider it Mega Evolving...
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 4 HP / 0 SpD Mega Charizard X in Sun: 160-187 (53.6 - 62.7%) -- guaranteed 2HKO
252 Atk Tough Claws Mega Charizard X Flare Blitz vs. 4 HP / 0 Def Heliolisk in Sun: 645-760 (242.4 - 285.7%) -- guaranteed OHKO
252 Atk Tough Claws Mega Charizard X Dragon Claw vs. 4 HP / 0 Def Heliolisk: 288-339 (108.2 - 127.4%) -- guaranteed OHKO
252 Atk Mega Charizard X Earthquake vs. 4 HP / 0 Def Heliolisk: 368-434 (138.3 - 163.1%) -- guaranteed OHKO
252 SpA Mega Charizard Y Fire Blast vs. 4 HP / 0 SpD Heliolisk in Sun: 331-391 (124.4 - 146.9%) -- guaranteed OHKO
...Not exactly the most reliable thing in the world.
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 252 HP / 252+ SpD Clefable in Sun: 113-134 (55.9 - 66.3%) -- guaranteed 2HKO after Leftovers recovery
That one I'll give you too, although Clefable's not the hardest thing to 2HKO.
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 4 HP / 0 SpD Cloyster in Sun: 538-634 (426.9 - 503.1%) -- guaranteed OHKO
252+ Atk Cloyster Icicle Spear (5 hits) vs. 4 HP / 0 Def Heliolisk: 305-365 (114.6 - 137.2%) -- guaranteed OHKO
252+ Atk Cloyster Rock Blast (5 hits) vs. 4 HP / 0 Def Heliolisk: 205-245 (77 - 92.1%) -- guaranteed 2HKO after Solar Power damage
Runs a risk switching in, but yeah, it'll fry Cloyster. Although most Special Attacks can 1HKO Cloyster without much difficulty.
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 4 HP / 0 SpD Espeon in Sun: 153-181 (108.5 - 128.3%) -- guaranteed OHKO CAN'T OUTSPEED
252 SpA Espeon Psyshock vs. 4 HP / 0 Def Heliolisk: 220-261 (82.7 - 98.1%) -- guaranteed 2HKO after Solar Power damage
...Support Espeon is more common, though.
252+ SpA Life Orb Solar Power Heliolisk Focus Blast vs. 252 HP / 4 SpD Mega Kangaskhan in Sun: 257-304 (121.2 - 143.3%) -- guaranteed OHKO
252 Atk Parental Bond Mega Kangaskhan Power-Up Punch vs. 4 HP / 0 Def Heliolisk: 216-255 (81.2 - 95.8%) -- guaranteed 2HKO after Solar Power damage
252 Atk Parental Bond Mega Kangaskhan Earthquake vs. 4 HP / 0 Def Heliolisk: 537-633 (201.8 - 237.9%) -- guaranteed OHKO
252 Atk Parental Bond Mega Kangaskhan Earthquake vs. 4 HP / 0 Def Heliolisk: 537-633 (201.8 - 237.9%) -- guaranteed OHKO
252 Atk Parental Bond Mega Kangaskhan Sucker Punch vs. 4 HP / 0 Def Heliolisk: 214-253 (80.4 - 95.1%) -- guaranteed 2HKO after Solar Power damage
Mega Kanga's banned so not sure why we're discussing it, but Heliolisk can't switch into it period, Jolly Kanga outspeeds, and Adamant Kanga says hello with Sucker Punch.
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 252 HP / 252+ SpD Togekiss in Sun: 195-229 (101.5 - 119.2%) -- guaranteed OHKO
That one I'll give you too.
252+ SpA Life Orb Solar Power Heliolisk Hidden Power Fire vs. 252 HP / 4 SpD Venusaur in Sun: 192-229 (102.6 - 122.4%) -- guaranteed OHKO
252+ SpA Venusaur Sludge Bomb vs. 4 HP / 0 SpD Heliolisk: 142-168 (53.3 - 63.1%) -- guaranteed 2HKO after Solar Power damage
0 Atk Venusaur Earthquake vs. 4 HP / 0 Def Heliolisk: 206-244 (77.4 - 91.7%) -- guaranteed 2HKO after Solar Power damage
Venusaur itself isn't very threatening to Heliolisk. And yet...
252+ SpA Mega Venusaur Giga Drain vs. 4 HP / 0 SpD Heliolisk: 136-162 (51.1 - 60.9%) -- guaranteed 2HKO after Solar Power damage
252+ SpA Mega Venusaur Sludge Bomb vs. 4 HP / 0 SpD Heliolisk: 163-193 (61.2 - 72.5%) -- guaranteed 2HKO after Solar Power damage
0 Atk Mega Venusaur Earthquake vs. 4 HP / 0 Def Heliolisk: 242-286 (90.9 - 107.5%) -- 43.8% chance to OHKO
252+ SpA Life Orb Solar Power Heliolisk Hidden Power Fire vs. 252 HP / 4 SpD Thick Fat Mega Venusaur in Sun: 161-190 (44.2 - 52.1%) -- 15.2% chance to 2HKO
Heliolisk is pretty much hard countered by Mega Venusaur. Even if it doesn't attack, defensive Mega Venusaur it can actually stall it out with Synthesis/Leech Seed. Heliolisk will never want to switch into any Mega Venusaur.
252+ SpA Life Orb Solar Power Heliolisk Hidden Power Fire vs. 252 HP / 252+ SpD Trevenant in Sun: 161-190 (83.8 - 98.9%) -- guaranteed 2HKO
Trevenant I'll give you too, mostly since I'm not fond of it. Heh.
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 0 HP / 0 SpD Genesect in Sun: 153-181 (104.7 - 123.9%) -- guaranteed OHKO (does not outspeed, genesect has 6.3&% to OHKO with u-turn)
252 SpA Genesect Flamethrower vs. 4 HP / 0 SpD Heliolisk in Sun: 147-174 (55.2 - 65.4%) -- guaranteed 2HKO after Solar Power damage
+1 4 Atk Genesect U-turn vs. 4 HP / 0 Def Heliolisk: 223-264 (83.8 - 99.2%) -- guaranteed 2HKO after Solar Power damage (Download would be the +1 btw)
That's your standard Scarf Genesect, which Heliolisk can't switch into. Life Orb Genesect would look something like...
+1 4 Atk Life Orb Genesect U-turn vs. 4 HP / 0 Def Heliolisk: 290-343 (109 - 128.9%) -- guaranteed OHKO
252 SpA Life Orb Genesect Flamethrower vs. 4 HP / 0 SpD Heliolisk in Sun: 191-226 (71.8 - 84.9%) -- guaranteed 2HKO after Solar Power damage
It's a risky endeavor to switch in.
252+ SpA Life Orb Solar Power Heliolisk Hidden Power Fire vs. 0 HP / 4 SpD Jirachi in Sun: 192-229 (109.7 - 130.8%) -- guaranteed OHKO (does not outspeed, Jirachi can't OHKO)
252 Atk Jirachi Fire Punch vs. 4 HP / 0 Def Heliolisk in Sun: 173-204 (65 - 76.6%) -- guaranteed 2HKO after Solar Power damage
252 Atk Jirachi Ice Punch vs. 4 HP / 0 Def Heliolisk: 115-136 (43.2 - 51.1%) -- 98.4% chance to 2HKO after Solar Power damage
Jirachi I'll give you too, although Heliolisk has to be wary of Fire Punch 2HKO'ing so the switch can have a risk.
252+ SpA Life Orb Solar Power Heliolisk Focus Blast vs. 252 HP / 252+ SpD Heatran in Sun: 179-213 (90.4 - 107.5%) -- 50% chance to OHKO
4 SpA Heatran Lava Plume vs. 4 HP / 0 SpD Heliolisk in Sun: 172-204 (64.6 - 76.6%) -- guaranteed 2HKO after Solar Power damage
4 SpA Heatran Earth Power vs. 4 HP / 0 SpD Heliolisk: 172-204 (64.6 - 76.6%) -- guaranteed 2HKO after Solar Power damage
Heatran I'll give you too. Though Scarf Heatran gives it trouble after LO/Solar Power.
252 SpA Heatran Earth Power vs. 4 HP / 0 SpD Heliolisk: 208-246 (78.1 - 92.4%) -- guaranteed 2HKO after Solar Power damage
Kamikazee-
252+ SpA Life Orb Solar Power Heliolisk Thunderbolt vs. 4 HP / 0 SpD Thundurus in Sun: 175-207 (112.9 - 133.5%) -- guaranteed OHKO (does not outspeed, Thundurus gets OHKO if hits with focus blast)
252 SpA Thundurus Focus Blast vs. 4 HP / 0 SpD Heliolisk: 270-318 (101.5 - 119.5%) -- guaranteed OHKO
Yep. Heliolisk runs a HUGE risk trying to switch in and gets outsped so it's not a good idea unless as a last resort or if you're feeling lucky.
Don't misjudge him, Heliolisk is a monster if you get him working in the sun.
No one denies that Solar Power Life Orb Heliolisk has a lot of power. The complaint has never been that it lacks power; The main complaint with Heliolisk is that it has the defense of a wet paper bag, not to mention that between Life Orb and Solar Power's recoil effects, it'll end up killing itself on most of the things that can 2HKO it. It desperately needs either a slow U-Turn or to follow something that was already KO'ed, because its ability to switch in is very limited, and it can't take a hit to save its life.
Again, I'm not denying Heliolisk's power. But you can't just look at the raw damage it deals to things; this makes it a check to most of the things mentioned, not a counter. Plus, it needs that Sun Support or it runs into issues of not being powerful enough. Most things mentioned can't switch into Heliolisk in Sun, but then again, Heliolisk can't switch into them either. And that's the reason Heliolisk is used as much (or perhaps as little would be more appropriate) as it is.