Elgyem is an aqua extraterrestrial Pokémon with an oblong head with depressions on either side. It has black, symmetrical lines going down the front of its head. On the front of its head are shiny, green button-like eyes. Its hands have three finger-like digits: one red, one green, and one yellow. It has short, stubby legs and a small tail. Elgyem controls incredible psychic power, which it uses to squeeze its opponent’s brains, causing them headaches. Overall, Elgyem has quite the welcoming and informative behavior. It is willing to help in stressful and otherwise difficult situations. However, Elgyem can become fully involved in something it feels to be important and protect that with its life.