This is Sobble, the Water Lizard Pokemon.

When it gets wet, its skin changes color and it becomes invisible.

It's raining.

Hey! Sobble's disappearing!

Heheh, now no one will be able to beat me at tag or hide-and-seek!

*zwrwrwr*

Argh, it's really coming down!

Let's go home.

No, wait! Let's play!

Stronger in the Rain?