There (hopefully) will be a champ by the time you open this paste. His team is made up of the first six Pokémon suggested by YOU after any valid team call or champ claim. The champ then heads down to the Pokémon Showdown!™ simulator to battle for a bit. After a few rounds he can call for either a new team or a new champ, and the cycle continues from there.
Still don't get it? Just lurk for a bit.