Bronto Thunder's girlfriend, Apatty Saurus is a kind, yet somewhat ditzy Apatosaurus from Reptilon.

She tends to be quite skilled at a great many things, which makes Bronto Thunder feel like he has to make up fanciful stories to impress her. He attempted to win her over as the superhero Thunder-Lizard. He eventually apologizes when he reveals this ruse to her, and they reconcile.

In the time he was away from Reptilon, she became the owner of the Rep-Tile shop where Bronto Thunder once worked before he became a Dinosaucer.