Here are the relevant images from this episode of FW Team-Up!
Highlights from Marvel Two-in-One #21, by Bill Mantlo, Ron Wilson and Pablo Marcos:
The Sky Cannon in two different eras; the story is bifurcated until the heroes find themselves in the same time.
The villain is revealed/created: Blacksun!
Ben realizes he's among heroes:
Every Thing story needs a moment where he uses his rocky mitts to clobber something.
The heroic pile-up proves too much for Blacksun.
An abrupt and cold friendly farewell:
Theme: "Batman: The Brave and the Bold" by Andy Sturmer.
Bonus clips from: "Jaws" by Stephen Spielberg, music by John Williams; "Cutthroat Island" by Renny Harlin, music by John Debney; "Doc Savage: The Man of Bronze" by Michael Anderson, featuring Victor Millan, with the "Doc Savage March" by Frank De Vol adapted from the music of John Philip Sousa.