was revealed when Tracey Sketchit
decided that he needed a good Pokémon to help him find the Crystal Onix
. Tracey's Marill
has very sensitive ears that can detect distant sounds and the round, rubbery tip of its tail can expand and contract, assisting Marill in the water. While swimming, Tracey's Marill
tail floats so he can see where it's going.
realized that Tracey Sketchit
and his Marill make a good team as Tracey's Marill
could hear a Pokémon long before Tracey Sketchit
could even see it. Tracey Sketchit
would often play a Pokémon cry on his dex for Marill to help it learn what the Pokémon sounded like so it could search for that particular Pokémon. Tracey's Marill
ears would twitch when it was searching or it found something.