Rinkus and Sierra are two pterosaurs who appeared as the main antagonists in the animated film The Land Before Time VII: The Stone of Cold Fire. Rinkus is a rhamphorhynchus and Sierra is a cearadactylus.

Rinkus is voiced by Rob Paulsen, who also voiced Strut from The Land Before Time II: The Great Valley Adventure and Broccoli Overlord from The High Fructose Adventures of Annoying Orange and Sierra is voiced by Jim Cummings, who also voiced Steele from Balto, the Bears from Sing, Nessus from Hercules, Dennis from Tarzan, Ed from The Lion King (even though Ed doesn't speak) and Pete from Disney’s Mickey Mouse cartoons.

About Rinkus and Sierra

Rinkus and Sierra are Pterano's henchmen, but they are much more evil than Pterano, and are often referred to as devil-like.

Together they set out to find the Stone of Cold Fire so they could use its power to rule the world.

They took Ducky away with them, and chased after her as she tried to escape due to a distraction by Rinkus standing on the edge of a cliff and falling.

She fell through the floor and was thought to be dead, but in violation of Pterano's orders, Sierra took her again when he found out she survived. She bit him, however, causing him to drop her. When Pterano tried to stop them from chasing after Littlefoot and his friends, they grabbed him and forced him to go with them, but they crashed into a rock wall.

Pterano reminded Rinkus and Sierra that he was the leader, but due to a thunderstorm they were forced to camp in a hollow cave-like area on the mountain side. Sierra expressed a desire to feed the kids to sharpteeth, to which Pterano decided to ditch them. Sierra wanted to kill him for this, but Rinkus convinced him to instead let him lead them to the stone. They tricked Pterano into thinking that they were on his side until he tried to take the stone's power and found it to be an ordinary rock. Rinkus and Sierra threw Pterano to the ground and hit the stone with rocks, demanding to see its power. At that moment, the volcano that the stone was on began to erupt. Everyone escaped except Rinkus and Sierra, who were still attacking the stone, until the stone exploded, sending them flying through the air where they landed in the same area they had previously camped in, severely burned. It is believed by many that this killed them, but at one point the film makers considered putting Sierra in a sequel, so their final fate is currently up for debate.


Sierra is the aggressive one and is viewed as a sadistic psychopath, while Rinkus initially appears as the humorous one, but is actually just as cunning as Sierra, as shown by his plan for Pterano to lead them to the stone so they can take its power themselves.


  • Interestingly enough, Internet Movie Database incorrectly listed Sierra as appearing in yet another animated sequel Journey to Big Water.
  • Rinkus' tail is flexible, when in real life rhamphorhynchus had a stiff tail for steering.
  • Rinkus and Sierra are among the few main antagonists to be considered real villains, since most of the previous main antagonists were predators by nature, who kill for mere survival.
  • Despite being Pterano's henchmen, Rinkus and Sierra are more evil than Pterano due to the fact that Pterano is an anti-hero as he redeems himself and does good things, while Rinkus and Sierra are not anti-heroes and they do not redeem themselves or have good intentions at all.


           UniversalLogo Animation Villains

Animated Features
Warren T. Rat | Mott Street Maulers (Digit) | Moe | Sharptooth | Cat R. Waul | Cactus Cat Gang (T.R. Chula, One-Eye & Sweet William) | Professor Screweyes | Steele | Junior Bloomsberry | Robert the Terrible | Serpent | Botticelli Remorso | 1 | 8 | Fabrication Machine | Machines (Cat Beast, Winged Beast, Seamstress, Steel Behemoths, Seeker Drones & Spiderbots) | The Chancellor's Party (Chancellor Fredinand) | Norvirus Raccoon | Percy "King" Dimplewade | Knuckles | Zhong | Mayor Muldoon | Heather Muldoon | Gunther

Other Animated Movies
Dr. Victor Frankenstein | Br'er Fox | Br'er Wolf | Nightmare Train

Ozzy & Strut | Hyp | Mutt and Nod | Ichy and Dil | Rinkus and Sierra | Pterano | Mr. Grasping | Toplofty and O'Bloat | Chief McBrusque | Scuttlebutt | Madame Mousey | Twitch | Niju | Nuk, Yak & Sumac | Farley the Fox | Danno Wolfe

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