Jon and Mark

"What are you losers doing now?"

- Eduardo

"We do? Oh yeah! (evil grin) Real, better things!"

- Jon

"We're probably what inspired YOU to do it."

- Mark

Eduardo, Jon and Mark are a trio of friends from Eddsworld. They appear as secondary antagonists in Hammer & Fail (Part 1, Rival Builders) and Hammer & Fail (Part 2, Rooftop Rumble). They strongly resemble Edd, Tom and Matt who are their neighbors and the protagonists of the show.

History
Their rivalry begins shortly after Eduardo and his friends moved into Edd's neighborhood. One day Edd orders Coke and Eduardo Diet Coke at the same time. However, their shipments become mixed by an accident. Eduardo believes Edd mixed up the order on purpose and he starts to hate him. Later, Eduardo and his friends build a giant extension to their house in order to look better than Edd's. However, it only is a large piece of cardboard, destroyed by the ghost from Edd's house. This forces Eduardo to help Edd to stop the ghost, but when Edd and his friends are fighting the ghost, Eduardo, Jon and Mark are just sitting outside of the house, watching and laughing at them. The ghost then moves to Eduardo's house and Edd refuses to help him as well, making Eduardo swear revenge on him.

In Face Space: Part 2, Eduardo, Jon and Mark are flying the space ship when they bump into Edd, Tom and Matt, flying in their space ship. The ships slowly fly away, with the gangs staring angrily at each other. In the comics No. 164 - info, Eduardo hires a spy to find out everything Edd is doing. However, when he gets and reads the list of Edd's activities, he wishes not to want to know it. Also, in the comics No. 182 - Blast, Edd is blasted from the canon into the wall of Eduardo's house, much to Eduardo's anger.