What is the definition omniscent character?

Answer 1

"Omniscient" means "knowing everything" (omni = all; scient = knowing). Usually a story does not have a character who knows everything (unless the character is God or someone with supernatural powers, like Merlin), but many stories have an omniscient narrator.

Sometimes the narrator of a story doesn't know everything. For example, the narrator of "Through the Looking-Glass and What Alice Found There" says, "Alice did not venture to ask him what he paid them with, and so you see I can't tell you." However, other narrators do know everything, including what all the characters are thinking, and what happens in times and places that the characters have never seen. These are omniscient narrators.