It turns out that Angus IS Trevor's father.
In the oncoming exciting single player DLC, the player gets to play as wheelchair badass Angus, equipping thermonuclear death lasers, antique world war 2 flamethrower, rocket launching handguns on All Sides of the indestructible turbo attached wheelchair, the player goes on a roaring rampage across Blaine County, Los Santos, and an exciting finale in outer space against flying saucers created by the evil Trevor Philips Industries!
Watch and play an exciting and heartbreaking tale of a crippled biker veteran's search, reunion, and revenge, against the son he so rightfully abandoned years ago, creating the monster that he is today.
Trevor: "You abandoned me once old man, you will never abandon me again. Hug Time papa!"
Angus: "No stupid, you killed the son I never had, his name was Johnny Klebitz, now you will suffer for it."
Unfold the mysteries behind the secret vaults of Trevor Philips Industries hidden inside mount chiliad, by blowing the whole mountain up.
Gasp, at the unbelievable realization ...
Angus: "It's a cloning facility!"
Brand new innovative storytelling device, a meta-universe example in our current day gaming trends: just how far does the clone controversy go?
Trevor: "With this piece of brain stuck under my boot during this whole time, I'm going to create legions, nay, a whole nations of Johnny Klebitz! brain dead, of course, mouahahahahhaha!"
When will we ever get tired of shooting at zombies?
Johnny Clone: "Loooooossssccchhhh Forrrrreeeevvvaaaarrr ..."
Angus: "You are no son of mine!!" *boom headshot*
How will Angus save the day?
Angus: "Simple, i'll clone a whole army of Jim the Fitz to fight beside me."
What the hell is going on with twenty first century storytelling methods?
Michael De Santa: "Didn't we already torched Trevor?"
Franklin Clinton: "Ret-con."
Michael De Santa: "Oh."
Is it even necessary that Angus turns out to be Trevor's father?
Trevor: "We can always pull a reveal at the last second of the game, showing that, in fact, uhh, we weren't related, like, at all."
Grand Theft Auto V Single Player DLC: Wheels of Steel, the most controversial game of all time, the tale of a dude on a wheelchair, his duel against a homosexual cannibal, and an overall positive message on the war on drugs.
Angus: "Alas, poor Johnny, the meth was too heavy to thee."
Terry's ghost: "Sucks to be Johnny, but why did I even have to die?"
Angus: "You lost your van full of infinite weapons, your existence as a character lost all of its purpose."
Terry's ghost: "Shoo!"
Clay's ghost: "But I smoked meth even back in the events of Lost and Damned, I ended up having not a single spoken lines during cutscenes, but I didn't have to die!"
Angus: "Well, your purpose as a character was to deliver a variety of bikes, but here all we ever have are clones of Johnny's Hexers ... wait, Johnny's Hexers have been cloned too?!!"
Johnny's Hexer Motorcycle Clone: WROOM WROOM