varanus_komodoensis
they call me Varanus
You need to discuss this in the Competitive subforum, on this thread. But here's the general idea of what you need to do.
You may already know this, but competitively, there are "tiers" of Pokemon of different strengths, because Pokemon all have different Base Stat Totals, which is the sum of each of the Pokemon's base stats. You can find a list of Pokemon by base stat total here. If it isn't already, you can organize that list by total base stat by clicking on that column heading. Arceus has the highest Base Stat Total, at 720.
Now, this is important competitively because Pokemon with higher BSTs have higher stats than ones with lower BST, obviously. This is where tiers come into play. In order for players to be able to use their favorite Pokemon competitively, "tiers" have been established that group Pokemon based on their overall power, moveset, and BST. Manectric is in RU, for "Rarely Used", and Arbok is in NU, for "Never Used". Very powerful Pokemon, like Garchomp and Infernape, are in OU, for "Overused". Most legendary Pokemon are in Uber. Because most Uber legendary Pokemon are banned in the Wifi battles, 99% of the time, when you log on to Nintendo Wifi to battle people, you will find people using Pokemon in the OU (and sometimes UU) tier because they are the strongest allowed. In addition to this, most people on Wifi battles have IV-bred and EV-trained their Pokemon to max out their stats even further, as well as breeding for the perfect nature and ability. You can find a list of which Pokemon are in which tiers here.
Because of this, the Pokemon you want to use - Manectric and Arbok - will have lower speed, attack, HP, everything - than almost ANY Pokemon that you will be fighting online. You can use these Pokemon if you want to, but because they have such low stats compared to things in the OU tier, you will most likely not win any battles, even if you breed for IVs, nature, and ability, and EV-train, because these Pokemon just naturally are unable to take hits from 31-IV, fully EV-trained OU Pokemon. Each of these Pokemon have counterparts who can do their job better - Manectric with Magnezone and Arbok with Toxicroak.
Scizor and Tyranitar, on the other hand, are competitively viable. I use a Scizor online sometimes. Tyranitar is only really useful if you're going to make a Sandstorm team because of his many weaknesses. Milotic isn't actually too bad either; she's in UU (underused) rather than OU, but UU Pokemon are often seen in the Wifi battles as well. I sometimes use Milotic, too
To answer your question, you can use RU and NU Pokemon online, but even at their best, they won't be able to stand up to the hordes of Garchomp, Latios, and Infernape that rule the online Wifi battles. If you want to use them, you will have to make sure that they have halfway decent IVs, are fully EV-trained, are using their abilities correctly, and have a wide range of coverage moves. It's best if you put together a team that works in sync, rather than a conglomeration of your favorite Pokemon that can't help each other. That's the best way to win these battles. If you want to use RU and NU Pokemon competitively, you can look on the Competitive Forums or put in your signature that you are looking for battles in those tiers. People around here will happily battle you!
