Powers: Groot's body was composed of a wood-like substance, and could draw wood from other objects to him psychokinetically, using the materials to re-build his own body, and also renew his strength. He could command trees to come to life, uprooting themselves from the ground, and send them to attack others.
Bio: Groot is an extraterrestrial plant monster who initially came to Earth seeking humans to capture and study. However he was seemingly destroyed by termites by Leslie Evans.
Through unknown means, he was later captured by S.H.I.E.L.D. and assigned to their Howling Commandos team.
In Incredible Hulk Annual #5, Xemnu made a duplicate of Groot and was used to fight the Incredible Hulk, however the Hulk destroyed him.
The real Groot currently plays a part in Annihilation Conquest. In issue number 2 of StarLord, Groot seemingly died after saving his team some time to escape a battle.