Medicham, the Meditate Pokémon. Through a combination of food deprivation and meditation, Medicham gains the ability to see its opponent’s aura.
– Dawn’s Pokedex
Medicham looks weird to me. But its type combination is rather unique, and somewhat helpful; Fighting offsets Psychic’s weaknesses to Dark and Bug, while Psychic offsets Fightings weakness to Psychic, so it’s only weak to Flying and Ghost, 2 fairly uncommon attack types.
Looking at its stats, with only 410 base stat, it doesn’t look very useful. However, its ability, Pure Power (which is its only ability not counting the Dream World in Gen V) doubles its Attack, making its base stat effectively 470.
Also, according to Dawn’s Pokedex entry, food deprivation gives you the ability to see your opponent’s aura. I wouldn’t recommend anyone try it though, I think it only applies to the Pokemon world, where things work in strange ways.