While camping at a mountain lake with the boys, Denver is mistaken for a horrible lake monster.
The boys decide to do a science project on dinosaurs for the school science fair.
Denver and the kids make friends with a circus owner's son and help him liven up a lackluster show with bicycle and skateboard stunts.
Wally's first day on the job at the zoo takes a turn for the worse when the self-serving Dr. Funt captures Denver for his new high-tech exhibit.
The kindhearted Denver rescues one of the boy's arch rivals, Scott, winning his heart and killing his plans to expose Denver to the media in order to gain publicity and votes for the upcoming s...Read More
Denver and Jeremy enter a wacky game show only to find they're competing against the team Morton Fizzback and Professor Funt.
When disreputable treasure hunters kidnap a valuable dolphin from a marine research facility and use him to locate sunken treasure, Denver dives in to save the dolphin.
Heather and the boys take Denver to a mountain ski resort.
The secluded beach where Mario surfs and the kids play is taken over by Rad Tad and his group of Surf Dudes.
To help Wally in his predicament with Johnny Price, Denver uses his magic tar eggshell and shows Wally a time in his own life when he was tormented by the Pteranodon, and Wally is able to becom...Read More
Denver and his friends form a rock band called Stone Age Rock. Freddy Facknitts invents a group of robots called The Roborockers. Denver and the gang must rescue the robots when Dr. Funt and Mo...Read More
Denver, the boys, and Freddy Facknitts attend a comic book convention. They are dressed as their favorite comic book characters.
Denver practices his magic act for the Charity Carnival. Denver wins and the prize is a rare historical artifact that was mistakenly donated for the raffle. Denver has to run from the shady Bir...Read More
Inga Vinga is a attractive girl who comes from Sweden for a visit. She also happens to be Wally's pen pal.
Denver, dressed in a Chinese lion robe and headdress, is in pursuit of dognappers in Chinatown during the Chinese New Year Parade.
Shades had developed a recent interest in karate, as well as in Nikko, the daughter of his instructor.
Wally has a part-time job working at KAY-HIP radio, where the disc jockey, Rockman, is trying to make his show more popular than that of the rival station, KAY-LOUD.
When Heather's and Wally's parents announce they are expecting out-of-town guests, Heather and Wally are forced to hide Denver at the movie theater, which is rumored to be haunted.
A boy genius, Freddy Facknitts, invents a time machine that sends Denver and Morton Fizzback into the past and into the middle of a crazy caveman competition called Mammothball.
When the boys enter Wally's dog, Rocky, in a relay race for dogs, they also disguise Denver as a dog so that Rocky will perform well.