Rinkus and Sierra are the secondary, later main antagonists in The Land Before Time Vll: The Stone of Cold Fire. They are Pterano's former henchmen.
Rinkus is cruel, angry (sometimes) and cowardly. He was also rude to Petrie as he said to him it's none of his business, told to buzz off and then he knocked him.
Sierra is cruel, evil, mean, angry, selfish, impatient, rude and sadistic. Edit
Rinkus is a pink Rhamphorhynchus with black eyes and white fingers.
Sierra is a brown Cearadactylus with yellow eyes and white fingers.
Sierra also has a dark green greyish colour and has black eyes during nighttime.
- Rinkus and Sierra play a similar role to Ozzy and Strut, who are the antagonists of the first sequel of The Land Before Time as Sierra's personality is similar to Ozzy's and Rinkus' personality is similar to Strut's. In fact, Rinkus and Strut are both voiced by Rob Paulsen, however, Rinkus is worse than Strut.
- The Land Before Time VII: The Stone of Cold Fire is the second movie that has an antagonist who is voiced by Jim Cummings who betrays their boss, the first being The Lion King as Sierra betrayed Pterano in The Land Before Time VII: The Stone of Cold Fire and Ed betrayed Scar in The Lion King.
- Despite being Pterano's henchmen, Pterano reformed and Rinkus and Sierra didn't.
- Rinkus is the only Jurassic pterosaur to appear in The Land Before Time VII: The Stone of Cold Fire.