Ok so I seen this lineart and at once this idea came into mind. ^^ This is the TMNT brothers and their master splinter and shredder.
Leo: -laughs and pounces on Raph wagging tail.
Raph: "HEY NO FAR!" ^.^
Leo: "Heheheheehehe yes it is!"
Raph: "Oh fine"
Mikey: -giggles watching his older brothers play, he was still to young to rough house so he just sat there.-
Donnie: Runs in circles trying to catch his tail.
Master Splinter: -chuckles-
Leo: "Hey Dad! Who is that?" He asks seeing a light gray wolf.
Master Splinter: -turns to look where Leo was looking and snarls- "Leonardo! Donatello! Raphael! Michelangelo! Get Behind Me Now!"
Leo: O.o -obays-
Raph: "why? He doesnt scare me!"
Donnie: -races over to Leo afraid-
Mikey: -whimpers and starts to back up-
Master Splinter: Steps infront so raph was so what behind him and snarls at the light gray wolf "Shredder" >.>
Shredder: "Hello Splinter. I heard you are training new pupils. But their not human are they? They are mutants arent they? Classic Splinter."
Master Splinter: "Maybe.. And what do you want of them!?"
Shredder: "To get rid of them of course. Now step aside old one!"
Master Splinter: "Never!"
The Green and Blue Pup= Leonardo
The Purple and Green Pup= Donatello
The Red and Green Pup= Raphael
The Orange and Green Pup= Michelangelo
The Darker Gray Wolf= Master Splinter
The Lighter Gray Wolf= Shredder
I do not own the lineart that goes to its rightful owner here [link]