Donny is a kid smaller then the average kid his age and appeared in Camp What-A-Nut. He'd hoped to have a good time but his hopes were partly smashed when bully Chas Wentworth made his presence known to him. At one point Whit took him out to the forest to cheer him up from being too small. However, when both were chased by bears his small stature came in handy when they both got chased by a mother bear up a tree and he later used his lighter weight to scale a tree and find their location. After they got back to camp and Whit told their story Donny was no longer made fun of for his height.
- In the original script, Donny's part was originally supposed to be that of Jimmy Barclay, but the actor was on vacation.
|“|| John Whittaker: Well, we'll just have to sit up here until she gets either tired or bored and goes away, but until then I'd suggest we do two things.
Donny McCoy: What?
John Whittaker: Well, the first is to keep praying.
Donny McCoy: I've been doing that. What's the second?
John Whittaker: Whoah! Hold on tight!
|“|| Donny McCoy: In science class I tried mixing some chemicals together to make glue. But all I got was kicked out of the class.
|“|| Donny McCoy: I entered the fishing contest, but every time I got a bite, the fish would pull me out of the boat.