When Darkwing Duck turns down the offer of joining the Super Power Union (which Gizmoduck happens to be a member of), the union's ambasssador, Mr. Wonderful, threatens to have his teammates upstage Darkwing and force him out of the superhero business... and it seems to work!
"Everybody Makes Mistakes" is purposely filled with artistic mistakes (and a few dialogue errors), with the gimmick being that this issue held a contest for readers to try and count all the errors within the story, and then send in the entry form on the very next page in an envelope with the number of mistakes written on it. Disney Adventures would do a similar contest, this time with multiple stories, nine years later.
This issue's Comic Zone also included the second half of "Citizen Robbie", the Dinosaurs story that began in the previous issue.