"Platypus" is the current camp mascot of Camp Campbell.
The Platypus mainly resembles a normal creature of it's species. However, this particular specimen appears to have large sharp teeth, a bright orange beak, a diet consisting of much larger prey than normal, and high levels of aggression.
It is unknown where this creature came from or why it has such unusual features. However, it's implied that it may have been a former subject from the lab below Cameron Campbell's summer home. It's also implied that before being first discovered, the creature had recently managed to kill and eat an entire bear down to the bones.The Platypus is first seen in the episode "Mascot", where Neil and Nikki discover it in a cave while inspecting the skeleton of a bear. Nikki is initially uninterested in the creature until Neil mentions the venomous spur on its hind leg. However, the Platypus proves too hostile for even Nikki, and proceeds to chase them out of the cave, through the woods, and out to the end of a dock back at Camp Campbell. The creature's rampage is stopped by Gwen, who simply grabs it by the tail and drops it, which results in the animal becoming much less aggressive towards the campers, and becoming more lazy and uninterested. He becomes the camp's mascot after he eats Larry the Hamster, who had been presumed dead.
The animal is next seen during the camper's hostile takeover of the camp, ambushing a raccoon and eating it.
The Platypus is seen again during the camporee, where it is pulled out of a hat by the Flower Scouts and attacks them.
The Platypus' next appearance is when Neil is attempting to win David's supposed prize, by trying to kiss the creature, only to have it bite his lips.
The Platypus was then seen in "Eggs Benefits" where it laid several eggs and Cameron Campbell puts the campers in pairs and has each group watch over an egg (presumably so he can sell the babies later). Due to various reasons, they all break except Nikki and Max's and it hatches, only for it to be immediately eaten by the Platypus.
In Cookin' Cookies the Platypus accompanied Max, Nikki, and Neil on their unknown adventure and briefly made an appearance at the end of the episode wearing a pharoh's crown.
- So far, the platypus is the only character with more than one voice actor.