In 2019, Project 11 had enough of Eggman. He was sick and tired of being neglected and having to do everything by himself. He knew where everything was. And he was going to do one last try until he goes to the last resort.

Project 11: ‘Master, please. Get off of the screen and focusing on that hedgehog and see how much I’ve grown!’
Eggman: ‘11, what have I told you? Go away! Subject V is much more important than you, than any other creation or being in this world! Even Sonic is not as important!’
Project 11: ‘What about me? I’m giving you another chance!’
Eggman: ‘Another chance? I never should’ve given you any chances! You did nothing!’
Project 11: ‘Fine, is this how you wanna play?’ 11 walked away for a second and came back with a gun (Revolver), Eggman didn’t notice because he was busy staring at the screen. And then Project 11 pulled down the safety and put the barrel behind Eggman’s head.
Project 11: ‘I gave you one chance. And this is how you repay me? This is YOUR FAULT!’

. . .Project 11, had shot Eggman in the back of the head. Eggman unalived sadly. Later that day, 11 was searching through files. And found one of himself.
He soon found out that Eggman killed his parents.