Meta-Metal Mania (Metal Men 20/Brave and the Bold 66)
Disgruntled scientist? Check. Racist sterotype robotic enemy? Check. Giant novelty birthday cake? Check. The Metal Men as paragons of patriotism? Now that one I didn't see coming. PLUS, Metamorpho ditches his powers for about ten minutes before thinking better of it!
Brought to you by Bobb Robinson of Checkered Past