He-Man clash with Skeletor, in which Skeletor was flung deep beneath Castle Grayskull into a pit filled with steaming liquid. The film ended with a post-credit scene in which Skeletor emerged from the liquid and proclaimed, "I'll be back!". After the end of the Masters of the Universe toy line, Mattel attempted to revive interest in He-Man by producing a new toy line, entitled "He-Man". The accompanying storyline in the mini-comics packaged with the figures explained that He-Man had left Eternia and pursued Skeletor into the depths of space, where Skeletor had set his sights on conquering the distant world of
Mega Man & Bass King to join with Bass in this venture, promising that the two would be invincible together. Proto Man appears and immediately destroys these plans. Wily then demands Bass to destroy Proto Man, but Bass is unsure. Proto Man tells Bass that although he is a strong robot of free will, he can never defeat his rival because he has nothing for which to fight. Bass doesn't care and forces Proto Man to leave, saying that he will still destroy Mega Man to prove his cause. Mega Man returns home where his sister Roll presents him a letter from King, who