There was an episode where Megavolt was in a bathrobe and didn't have his hat on. He only had a tiny speck of red hair on top.
And when Megavolt was a high school kid named Elmo Sputterspark, he gained his powers when a bully messed up his science experiment and gave him electric powers, plus making his hair all huge and funky.
I knew of those appearances. The first wa sin Duck Blind, and the other in Clash Reunion. On Youtube, it seems like only part 2 (or 3, can't remember) is up. I've noticed that the epsidoes are split into three parts on youtube, but most of the first parts are no longer there. Part 1 of Duck Blind is online, but the audio is missing, with the page stating that it's because of music (probably the theme song, which users have included when uploading every episode).
In Clash Reunion, I wodnered if that afro was real or a wig (since it was a flashback).
Also, in Up, Up, and Awry, when Darkwing and Gizmo find Megavolt, his helmet flies off his head for a second and he's drawn as bald. I wonder if that small speck of hair could be a wig.
Launchpad was seen without his cap in Trading Faces, where he had a full head of hair, and The Battle of the Brainteasers, where he was bald. In the latter, it comes off when other characters pull it off. It seems like they struggle when pulling it off... Is it really hard for aviators caps to come off (on Rocky and Bullwinkle, Rokcy was rarely seen without his, and when he was, he was usually wearing a night cap over it)? I have a feeling that Launchpad was seen without it in The Return of the Battle of the Brainteasers, Too! but currently youtube only has "part 3" up, not showing Launchpad between having his cap and a brainteasers hat on (or vice versa).
But speaking of these youtube removals of first parts, youtube does have all of the rare episode Hot Spells, which was only broadcast once before being pulled from airings. The theme song isn't included on that youtube upload. While the episode was good, it wasn't that great.