Murderous Maths

Murderous Maths is a series of books written by Kjartan Poskitt to make kids learn maths, and it might just have succeeded. The characters it uses include Riverboat Lil, the Evil Gollarks, Professor Fiendish, the gang of crinimals led by Blade Bocelli... the list goes on. The books are filled with plenty of gags, as it is with many of Poskitt's books.

This series of books provides examples of:

 * Alien Invasion: The Gollarks try this several times, so they can tip over all the wastebaskets on Planet Earth. Gasp!
 * Harmless Villain: Both villains.
 * Little Green Men: The Gollarks fit this trope exactly. Come to think of it, they fit a handful of tropes.
 * Mad Scientist: Professor Fiendish.
 * Too Dumb to Live: Possibly the Evil Gollarks. Definitely Binky.