Outside respective game-verses:
Omega-Xis or Laplace from Megaman Star Force, Mew/two, Link, Pit as portrayed in Brawl, Sho Minamimoto, or the Weighted Companion Cube (who won't try to stab you, and can't speak).
Inside:
Pokemon NPC (either a "technology is amazing!" guy, or a "shorts are comfy!" guy), Clank of Ratchet and Clank, or Lord Cecil until I reach Zeromus at which point I'd likely excuse myself from the gene pool. And cast Raise. \o/