GrumpStalgiaNerdStuck

Critic: HHAAAAH!

Barry: At least you have pants. Goddammit Ross, quit floating above me!

First thing's first: the background is not mine. It comes from this page from Homestuck. Other than that, though, the rest was done by me.

Edit: Wow, I can't believe it took me this long to realize I had given Barry the Hope color scheme instead of the Light one! Also, I redrew Arin, as before he wasn't really doing anything interesting other than creepily just staring at Suzy with his grossly oversized arms. If anyone actually likes the old version for whatever reason, lemmie know and I'll put it in my scraps.

Now, here's why I chose each person's particular god-tier title:

Arin is the Sylph of Breath. When drawing Arin, I knew that he had to have a female-oriented class. He always plays as girls in video games, so SBURB should be no exception. He's a Sylph specifically because Sylphs heal their aspect, and Breath has to do with flow and direction. When Jon left the Game Grumps, Arin was quick to get things moving again by bringing Danny on board and helping introduce Steam Train. He let the channel flow into an organic, multi-series let's play hub centering around him and his closest friends.

Jon is the Bard of Blood. A Bard can destroy or invite destruction through their aspect, and Blood is generally believed to symbolize unity and leadership. Jon helped start the Game Grumps along with Arin, forming a strong union between the two, but their partnership in the show was destroyed when Jon decided to move away, and quite unpredictably at that.

Suzy is the Seer of Heart. Serving as the team's mediator and mother figure of sorts, Suzy has a deep sense of empathy and compassion toward her friends. As a Seer of Heart, she can sense the emotions of those around her and understand what they're feeling and why. Since Heart is considered to be the antithesis of Mind, she cannot see the consequences of one's choices and actions, but rather she can see how one's feelings and emotions caused them to make previous choices and actions.

Barry is the Mage of Light. A Mage is believed to either create their aspect, or be manipulated by it. As the editor for Game Grumps, Barry creates information for the viewers, acting as a go-between for them and the Grumps in the video. Additionally, when he joins in Steam Train, his victories and losses are often determined by pure luck.

Danny is the Thief of Void. Like Suzy, Danny helps mediate between the Grumps, notably in how he plays with both Arin and Ross in two different shows. He's also one of the most grateful and optimistic Grumps, dealing with his problems so he can help others with theirs. Similar to Roxy, he can steal "nothing", but instead of stealing the nothing away from ideas to make them a reality, he can steal the nothing away from someone else. With this, he can restore lost memories, provide medical assistance by replenishing lost blood or organs, and maybe even fill emotional gaps by literally removing them. In short, he is an active player that can act like a passive one.

Ross is the Page of Rage. A page is someone who provides others with their aspect (and also they wear ridiculously tiny undergarments). As someone whose Phrase Catcher "Goddammit Ross", it's easy to imagine Ross spreading Rage around to everyone else--even if it's mostly directed at him. 

Kevin is the Heir of Life. I don't know much about Kevin except that he's adorable as hell and, according to the wiki, he has a large appetite. So I figured he'd look even more adorable in a windsocky heir outfit, and the life aspect has connotations of baking and food.

Now we have the Nostalgia Critic and Angry Video Game Nerd. I'd imagine that they plan to play the game together competitively, but somehow get wrapped up in the Grumps' session instead.

The Nerd is the Prince of Time. While both he and Nostalgia Critic could both be Time players if they were in different sessions, I think that the Nerd should get the aspect in a shared one. The Nostalgia Critic doesn't really review nostalgic movies anymore, and the Nerd has a good justification for being a Prince. A Prince destroys their aspect, and the Nerd often destroys old games from a different time. In the SBURB session itself, if he gets too angry then then people around him jump to some point in the future--he destroys the time in between.

The Nostalgia Critic is the Knight of Space. To be honest, I was running out of options at this point, but I think the title fits. The Critic is a very active fighter, often pulling out a gun and shooting whatever pisses him off, so as a Knight of Space he could potentially turn anything into a gun that shoots anything. And he'll probably be aiming at the Nerd most of the time.