Frogo is a frog and the former King of the Beasts. He declared himself thus after the discovery of the then-abandoned Cassle Castle, which he claimed for the Beasts under his rule. After taking part in several of the major events of the Game World, losing Cassle Castle to the returning Elizabogans and moving with his fellows to the Treethedral, he was eventually deposed by Eckharte Troll and fled to a lilypad by the creek.

Losing his power and privilege seems to have cracked him somewhat, splitting him into two distinct personalities. One is greedy, grandiose and self-absorbed, and schemes constantly to regain his throne, whilst the other is peaceful, spacey and relaxed, content with his new responsibility-free existence. Visitors to his lonely lilypad beneath the bridge are never quite sure which Frogo they're about to meet...