Is this really so barebones the character names aren't even in it? Like, baby Taz is named Dizzy, but Tiny Toons wasn't relevant enough in the GBA-era for people to know that if it doesn't say so! I'm so baffled by this, and also I gotta play it.
They probably have the names in the manual, but in-game I didn't see any names at all.
Before you even brought up that L and R aren't used I was already baffled by the button combination for shooting. I love Solomon's Key a lot and always wished someone would make an expanded version with more levels and mechanics akin to Lode Runner Mad Monk's Revenge, but looks like this still isn't it ahaha. Holding out for a Solomon's Key level editor to this day!
Really Tang Tang taught me I should just play Solomon's Key instead