This guy really needs no introduction. He's everyone's favorite caveman and possibly the only caveman to have his own commemorative stamp.
Anyway, here's Alley Oop, Ooola, Dinny the dinosaur, Guzzle (the king of Moo), Oompa, Foozie, Dr. Elbert Wonmug, and the rest of the gang. Enjoy.
P.S. If you're interested in Alley Oop and his creator V. T. Hamlin, you really should check out Max Allan Collins' documentary Caveman: V. T. Hamlin & Alley Oop (2005), available on DVD.