This 11 page PDF will instruct you on how to make all three (charmander squirtle and bulbasaur) These guys are small, measuring at about 3 inches, bulbasuar is about 2 1/2 inches

This is a 4 page step by step PDF pattern (ENGLISH WRITTEN) for making this little set^^. I would consider this a beginner level pattern for those who have some knowledge of amigurumi crafting.

Finally got around to making a PDF version of this doll pattern based on Finn the Human character from Adventure Time.