Could General Grievous Be Alive?

Grievous is still alive in the way that most of us would think of as being alive, but the remaining portions of his organic form are pretty much only the things he would absolutely need to still be considered a living sentient being.

Is General Grievous alive?

Grievous was killed shortly after in the Battle of Utapau by Kenobi, and the Confederacy fell soon after. At some point after Grievous's death, his body was used to create the droid warrior N-K Necrosis, who considered himself to be the reincarnation of Grievous.

How powerful is General Grievous?

He is physically strong and can overpower less skilled opponents. He can not take on a lot at a time like in the older series. The more agile opponents give him more trouble, but he still can overpower them (Ahsoka). He is a Jedi Killer, but he uses any tactic necessary to win a duel.