Ah Slowbro, one of my favorites if my avatar ID was any indication. Slowbro has always been a great Pokemon since gen 1, but it wasn't until it got Slack Off that Slowbro really came into its own and became the staple defensive wall that it is today. Late gen 6, Slowbro even got its own Mega Evolution and became even stronger, and though Mega Evolution has gone the way of the Berserk Gene, Slowbro continues to be a top tier threat. It's new Galarian form also grants it a few new competitive niches as well even if it is not quite as reliable as its Kanto cousin.
Acetic Acedia
Ability: Regenerator
Item: Leftovers
Nature: Bold (+Defense -Attack)
EVs: (HP 252) (Defense 252) (Sp.Defense 4)
Moves:
Calm Mind
Slack Off
Scald
Psychic/Psyshock
Set Details:
A Calm Mind set that turns Slowbro into a complete tank both offensively and defensively. Calm Mind boosts special attack/defense allowing you to hit harder and take special hits better, while Slack Off keeps you healthy as you set up and slowly steam roll the opposition. Water/Psychic is an excellent STAB coverage hitting most targets for neutral damage. Scald is every defensive Water type's best friend allowing you to do respectable damage and potentially burn physical attackers, making all the harder for them to take you down, and Psychic/Psyshock rounds off coverage nicely with the former being stronger and the latter being able to hit special defenders harder, especially now that Chansey is back. Ability goes to Regenerator which gives Slowbro added recovery on the switch, Leftovers compounds the recovery and longevity even further, and your nature/EVs are all put into HP and defense since Calm Mind automatically boosts your special defense.
Quick Draw, Quick Claw, Quick Slaw
Ability: Quick Draw
Item: Quick Claw
Nature: Modest
EVs: (HP 252) (Defense 4) (Sp.Attack 252)
Moves:
Nasty Plot
Side Arm Shell
Psychic
Flamethrower/Scald
Set Details:
A fun little set to use for Galarian Slowbro. Since Galarian Slowbro is not as bulky as regular Slowbro, nor is its defensive typing as ideal, this set plays into its more offensive capabilities rather than its defensive ones. I will admit this is somewhat of a gimmick, but it is a devastating gimmick when the coin toss lands in your favor. Factoring in the individual activation rates of Quick Draw and Quick Claw, the odds of striking first are a little over a 1 out of 3 chance. Coming from Galarian Slowbro's low speed, this ability is a godsend and has crushed many a competitive teams thanks to its frequent activation bypassing the speed factor. Nasty Plot allows Galarian Slowbro to hit super hard, Side Arm Shell is your reliable Poison STAB and has the ever so helpful bonus of factoring in the damage calculator to do the most damage, Psychic is excellent secondary STAB coverage, and your coverage move comes down to preference. Flamethrower punishes Steels types that are resistant and immune to your two STABs, but Scald offers burns and wider neutral coverage (Not to mention it hits Ground types harder). Nature and EVs go into HP and special attack allowing Slowbro to have some bulk and power. You may be thinking to yourself that this is a luck based set, but let me tell you something:
This is a 44 Veno-magnum, the most powerful poison gun in the world, it would blow your Pokemon's HP counter clean off. And you have to ask yourself, with that 1 of 3 chance, do you feel lucky? Well do you punk?