Bio: Landslide can cause intense vibrations and tremors in anything, animate or inanimate, that he touches. He can cause earthquake level tremors, or cause injury to a living thing on contact. He is limited by his need to directly touch an object, and he cannot project his power across a distance.
Landslide is also a pacifist, and, while willing to use force when necessary, he will often try to solve problems through discussion or less violent means.
It was Landslide who was sent to the surface to investigate the tremors caused by Avalanche, and he acted independently of the group in that adventure.