Decline's Drops: Part 33: Lethal Laboratory - Lvl. 5
Bad News, there's no cameo characters for this last regular stage of Lethal Laboratory.
Good News? Instead, it's a whole other kind of reference: A Game & Watch! I mean a "Game & What".
Before you can use it, you have to find different "!" Switches in different courses of this level and hit them to power this thing. They're colored Red, Blue, and Yellow, and look like the same switches you'd find in Super Mario World.
Once the Game & What is ready, hop on in!
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Globule becomes an LCD screen character, and your first task is to punch out the chicken that come towards her way.
Afterwards, you fight a frog that shoots eyes at you. Punch them back at the frog to beat it, and then you beat the whole Game & What!
It’ll then basically send you to the end of this stage. Such a cute tribute, as well as all of those previous characters in previous stages!