A handful of people are already calling the Act III lead "Roll", even though it hasn't been confirmed if that's who she is in the story.
Nobody knew who Robobot was (he confirmed his name himself), so they called him "that blonde-haired guy."
Cobra T. Washington was named "Jesus Guitarist," due to him having a Jesus-like beard at his first show and nobody remembering his name.
The Gunslinger was nicknamed "Brick Cat" because his face paint apparently looked like a cat. Then he changed his face paint and received the nickname Gorgoroth.
Hey, It's That Guy!: Ringo Segundo was in one of Turbo Lover's other bands before joining the Protomen.
Talking to Himself: Panther as Megaman, Protoman, Joe and Light, and the very first live rendition of 'The Good Doctor' where he sang as Light and Wily.
The Other Darrin: K.I.L.R.O.Y. speaks most of Protoman's lines in live performances of "The Sons Of Fate." This is to avoid the usual case of Panther talking to himself live, as shown above, particularly since most of the Mega Man and Protoman lines in the first part of the song overlap each other and couldn't be performed by one singer.
Emily was voiced by Ellen Aim on the vinyl and live a couple times, the Merchant live once, and the Gambler live most times and on CD.
Throw It In: Commonly done during the live performances. One notable example was the time Turbo Lover chucked his hat into the crowd and then forcibly took it back just to prove that he's evil.
What Could Have Been: Prototype lyrics for Breaking Out suggest the girl in the bar may have originally been more than a random person, with Joe speaking more personally to her.
So kiss me fast cause there's no time to lose/I promise someday I'll come back for you/And if I die, don't blame yourself; we all do what we think is right!
Breaking Out originally had different lyrics, with Joe speaking more personally to the girl in the bar.
The finalized lyrics:
So kiss me fast cause there's no time to lose/Leave the light on, I'll come back for you/When everything is said and done, I swear I'm gonna make it right...
The prototype lyrics:
So kiss me fast cause there's no time to lose/I promise someday I'll come back for you/And if I die, don't blame yourself; we all do what we think is right...
The finalized lyrics for a different section:
I'm so tired of giving up. I am so tired of giving in. You wake up knowing things should change, not knowing where to begin. This city won't say where she's going, and she won't speak of where she's been.
The prototype lyrics for that section:
I'm so tired of giving up. I am so tired of giving in. This city won't say where she's going, and she won't speak of where she's been. It's like the whole damn world is fighting, and you never see who wins.