Gleek is a fictional character appearing in the animated series Super Friends and its related spinoffs. He debuted in The All New Superfriends Hour, which first aired September 10, 1977. Gleek's vocalizations were provided by Michael Bell.
Gleek is a blue "space monkey" and the pet of Zan and Jayna, the Wonder Twins. Gleek is often used as comic relief for the series, as the character often gets into mischief. A joke involving Gleek often ends episodes of the Super Friends in which he appears. Gleek has a stretchable, prehensile tail which can be quite useful. Gleek is also highly intelligent, as he clearly understands spoken English, even somewhat complicated concepts such as the various stages of simple strategic planning.
He communicates through the use of sign language, acting out scenes, and chattering in an unintelligible alien tongue. Gleek also helps the Twins when they need to travel: Jayna becomes an eagle, Zan becomes water, and Gleek produces a bucket to hold Zan while Jayna carries them both. A joke observation about this is that Gleek's other power is to materialize a bucket out of nowhere on demand. Possibly unrelated, the verb "to gleek" is the projection or "spitting" of saliva from the submandibular gland underneath the tongue.