Not really silly like you put it.... When you meet them, they sort of taunt you, you defeat them and they shout out something in pain.... then you meet them in the next stage, they say something about themself and/or their boss machine, then summon the boss, get into it, you destroy it, and then they yell out some last words in agony as they are sealed in the crystals.... By the way, I forgot to mention in my previous post that they will say something before they get into their boss machine. I can't remember much of what Earth Bomber says, just the line "Let's go, [boss' name]!"