The Herculoids
Defending the planet Amzot from menaces from outer space. In addition to the humanoid characters (Zandor, Tara, and Dorno), there was a dragon who could shoot lasers (Zok), a giant rock ape (Igoo), dinosaur rhino who shot rocks
through his horn (Tundro), and two absorbing protoplasm creatures (Gloop and Gleep). Although the cartoon first appeared in 1967, I caught it when it was revived for a short time in 1981, under the name "Space Stars."