How much harm can a Harmful Andi cause?

How many of my references can you spot? The last comic had 3 fairly easy ones, but this comic has 7! It really has 8, but I changed one so much it's barely noticable unless you know what you're looking for!

So! We've done Biff Kid, Hostile Rob, and Harmful Andi...the next creature is the last of the Previous Adventures croud, and probably within the next 10 chaptisodes Mega Mecha Dave will make an appearance!

Lovin' it.