Teebo was the star pupil of the EwokLogray, though he did not succeed him as an Ewok medicine man, as Paploo was the successor chosen by ChiefChirpa. His sound judgment had led to his position as a leader within his tribe. Teebo was also a close friend of Wicket Wystri Warrick. He was son of Batcheela and Warok and the brother of Malani.
Teebo wore the skull of a gurreck[1], decorated with churi feathers, on his head[3] and carried both a hunting knife and authority stick.[1] He was considered a watcher of the stars and a poet.[3]
Teebo and Wicket shared many adventures growing up, along with their friend Kneesaa a Jari Kintaka. Teebo is also the lover of Latara. Wicket and Teebo once went on a dangerous mission and crossed the Rainbow Bridge to save Kneesaa's life. They also trained a bordok for her as a birthday present.
Later, in order to rescue the shrunken Princess Kneesaa, Teebo himself was reduced to the size of an insect. In the Fleebog tunnels, he helped to defeat the ra-lugg.
On the eve of Morag's final attack on their village, Teebo approached the shaman Logray and asked to become his apprentice. Logray approved, and Teebo began learning the ways of Ewok magic.
Teebo acted aggressively toward Han Solo when his team arrived on Endor to destroy a shield generator. After being freed from his bonds, R2-D2 promptly zapped Teebo's backside.
"[Teebo] got a little big goofier-looking, more in keeping with his personality, more awkward in his stance."
―Ewoks associate producer and story editor Paul Dini describes changes to Teebo's character design in the second season of Star Wars: Ewoks[src]
It is quite probable that Teebo was Force-sensitive, as his master probably was too.
In Return of the Jedi, Teebo has gray striped fur, wears a skull and handles an axe in combat. In the cartoons, Teebo has brown fur and looks much younger.
It seems that Nelvana, when producing Star Wars: Ewoks, may have received misinterpreted biographies, or had names switched for Teebo and Paploo, as the two characters apparently have each other's personalities and physical appearances from Return of the Jedi. If true, this is understandable as the show was created in the early days of Return of the Jedi's characters' backstory writing.