In Pokémon Colosseum's Battle Now mode, the player may participate in quick battles that draw from a small set of predefined teams and opponents. The battles are set in Phenac Colosseum and the player can choose from four different battle difficulties, Easy, Normal, Hard, or Ultimate, and two battle types, Single or Double. For each difficulty level and each battle type there are eight possible opponents. When the player chooses to play, they are offered a team that corresponds to the team of one of these opponents, and if they accept that team, their opponent will be chosen from one of the remaining opponents.
The Battle Now opponents can also be found in the Battle Modes of Mt. Battle; they are entirely unchanged, with the exception that Trainers who were designated as Area Leaders in Mt. Battle are instead classed as Supertrainers in Battle Now. Higher difficulty levels correspond to higher Mt. Battle Areas.
This section is incomplete. Please feel free to edit this section to add missing information and complete it. Reason: Each Single Battle Trainer should have full team data, like all the Trainers listed under Double Battles.