Greninja didn't know why Big the Cat wanted him. All the blue frog has been doing is running, and it's because this stupid obese purple cat mistook him for a regular frog.
"Fwoggy, come back!" Big cried out as he flailed his large arms about. "I can't live without you!"
No matter what Greninja did, it was all for naught as Big continued coming back. Just what was it that the cat saw in him, anyway? Was it his looks, his impressive skills, or was it just the fact that he happened to be a fucking frog?