Seven (Pocketman)

Seven (real name unknown; described as "long and weird looking, has a 7 in it somewhere") is a rumored Pocketman. Only a blurry picture and anecdotal evidence of it exists.

Speculation
Seven is said to have an astronomical ATK stat, but be poor in other areas. It also reportedly learns the same move multiple times, and can simply "show up" in a player's party, even situating itself in a fourth slot in the player's team.