The Frog Monster is one of the three Corrupted Gems set against Jasper's students during one of their later training sessions.
Description[]
As the name implies, this Corrupted Gem mostly resembles a Frog, namely a hybrid between a Horned Frog and Treefrog. It has yellow skin with a pale underbelly. It has a long tongue like a Gecko, and curved horns just above its eyes which she uses to ram.
She is highly durable due to her thick skin, and can grab objects with her tongue to spit back out as liquid-based projectiles.
History[]
She was briefly released by Jasper as part of another training session. At first the Corrupted Gem didn't react that much, but quickly began to retaliate against her opponents after some stress.
She fought the longest out of the three Gems, and tried to attack Steven Universe during the session. Thanks to her horns and eyes mirroring Grogar, this made Steven brutally attack her, causing her to poof the other two Corrupted Gems and retreating into Celestial Lake, where she was poofed underwater.