== Slippy is one of those frogs that can change gender a la Jurassic Park. == I can't remember where I read this, but it explains the Viewer Gender Confusion well enough, as well as the change in voice between 64 and Assault. Slippy would normally be male, but the single-gender environment triggered a gender change. After Krystal joined the team, it was no longer a single-gender environment and Slippy reverted to being male. * Hmm... unlikely, as his voice became male before Krystal joined (in Adventure).