Zimbulu is a lion demon from the Chest of Demons.
Zimbulu has an intimidating appearance, being a cross between a brutish man and a savage animal. He is an anthropomorphic lion demon with an imposing shirtless muscular build, brown mane and beard, stereotypical demonic black horns, brown arrow-tipped tail, white fangs and finger claws, goat/satyr-like feet with only 2 black toes, tiny eyes with green sclera, and a green loincloth sash.
Zimbulu is very clever and determined to release his fellow demons from the Chest of Demons and to gain all the power in the universe. He will stop at nothing to achieve that goal. Zimbulu was so threatening and intimidating that both Bogel and Weerd grovelled on their knees and kissed his hooves.
The 13 Ghosts of Scooby-Doo
Zimbulu appeared in human form, as the medium Tallulah, on Boris Kreepoff's TV show where he hoped to steal the Chest of Demons. He was beaten to it, however, by Kreepoff who used a trick rotating stage.
Zimbulu wanted the Chest so he could free all the ghosts and gain all the power in the universe, something only possible during the night of the Winter Solstice.
As Tallulah, he misdirected the Gang and employed Bogel and Weerd to "get rid of those kids", while he searched for the Chest. When the location of the Chest was finally revealed, he appeared again as Tallulah and succeeded in grabbing and opening the Chest.
He was foiled by Flim-Flam who used the Vacuu-Spook 2000 to round up all the escaped ghosts, and Zimbulu himself, and then sealed the Vacuu-Spook in the Chest of Demons.