Full Name Scarosaurus
First Appearance (Xianghua in Rockoland) Welcome, Sleepy Friends!
Xianghua in Rockoland Portrayer Harry Shearer
"I think there's two sleepy heads in here."
— Scarosaurus, before Chai Xianghua falls asleep.

Scarosaurus is an apatosaurus who happens to be Seong Mina's best friend. He is also known for causing the female Xianghua in Rockoland to fall fast asleep.

In his Rocko franchise premiere, Luna was already sleeping (Thanks to Pegosaurus' hypnosis trick), then he said that there were two sleepy heads in the living room, causing Chai Xianghua to fall fast asleep. He later said that there were actually three sleepy heads in the living room, thus forcing Alisa Bosconovitch to fall fast asleep and start snoring.

Scarosaurus is voiced by Simpsons voice actor Harry Shearer during Xianghua in Rockoland.