Pokemon look-alikes? Demetrius is totally Stunfisk. Totally. But he'd have a gimmick team built around Metronome/Assist, including some male versions of cute Pokemon to mess with people's expectations.
Oh yeah, and the powers Demetrius has for the game.
Scan- Water-based. Demetrius focuses on the condition of water within another being, taking a short time to focus. He can then tell some information about the being scanned. It's not thorough unless he spends a lot of time focusing and the order in which he picks up information (elemental preference, health, etc) is random at this level.
Ice Needle- Ice-based. A small sharp piece of ice, about as big as Demetrius' pinky finger, is summoned and fired at the target. Quick, but very weak.