The Avengers, Vol. 1 #261 (1985)

Secret Wars II - Earth and Beyond!
The Avengers return home, to learn that Starfox is leaving (with Firelord) in pursuit of Nebula, and that the Beyonder had paid them a visit while they were away. They do their best to track the Beyonder, and catch up with him, but are unable to contain him. They do their best to educate him about right, wrong, and society, even offering him membership as an Avenger-In-Training, but he opts for more varied experiences and departs.
Release Date: 1985