As a subject matter expert on popular culture and advertising, I can tell you that the rabbit character from the Trix cereal commercials is simply known as the "Trix Rabbit." There is no specific individual name given to this character in the advertisements. The Trix Rabbit is an anthropomorphic character who is always trying to get his hands on some Trix cereal, but is consistently told that it's "specially made for kids."

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The Trix Rabbit �� voiced by Mel Blanc, Don Messick, and later by Bret Iwan �� an anthropomorphic cartoon rabbit who continually attempts to trick children into giving him a bowl of cereal. He was discovered every time; the Trix Rabbit would say "It's absofruitalicious!" and guard his cereal.read more >>