The online article Donatello finds is titled "Invasion of the Punk Frogs". This was the name of the Teenage Mutant Ninja Turtles (1987) episode where the Punk Frogs made their debut.
Napoleon is voiced by Jon Heder, who is best known for portraying the title character of Napoleon Dynamite (2004) (a film about a socially awkward teenager who has a sullen and aloof attitude). Heder portrays the character using the same accent and speech patterns as Napoleon Dynamite.
Attila Frog's portrayal is inspired by Marlon Brando, specifically his roles in The Godfather (1972) (a husky-voiced chieftain) and Apocalypse Now (1979) (a deluded army leader).
The online article about the Punk Frogs features an image of Napoleon Bonafrog from Teenage Mutant Ninja Turtles (1987), an image of Napoleon Bonafrog as portrayed in this episode, and an image of Michelangelo from Teenage Mutant Ninja Turtles (2014).
Napoleon's shirt has a pony and the words "Happiness is Friends" on it. This is a homage to My Little Pony: Friendship Is Magic (2010), as well as foreshadowing his development throughout the episode.