Liam encountered a Machop inside the cave. He called on Jiraiya. The Froakie won and evolved.

"[i]Frogadier, the Bubble Frog Pokemon, and the evolved form of Froakie. It can throw bubble-covered pebbles with precise control, hitting empty cans up to a hundred feet away. Its swiftness is unparalleled. It can scale a tower of more than 2,000 feet in a minute's time.[/i]"