Bro Strider

Not much is known about Bro's early life other than being born through ectobiology and also provided half of the DNA of both Dave and Rose, making them his genetic children. He was also shown to waited for Dave's meteor arrival at Dave's record ship holding a small pair of "outrageously awesome shades".

At the begining of Homestuck, Bro is shown to earn his income by running many "ironic" websites, including a paysite for implied pornographic material involving puppets which he earns thousands of dollars a month from.

Later when Dave looks for his Sburb copy to play, Bro wrote him a note telling him to meet him at the apartment rooftop for Dave to fight for the Sburb copy.

In his Strife, he blatantly outmatches Dave in both rounds 1 and 2 and manages to not only dodge but counter most, if not all, of Dave's attacks, appearing to never get hit once while landing almost all of his attacks. Bro also shows a higher degree of speed, as he is able to not only predict but counter all of Dave's attacks ahead of time at one point, making it appear that he is fighting when it's really just an after-image that Dave battles while Bro waits on the sidelines.Dirk is obsessed with puppets and has decorated his apartment with them. His collection includes both paintings of them and various marionettes, dressed in super cool gangster/pimp clothing. In contrast to John and Rose's disgust for their guardians' obsessions, Dave thought his Dirk's puppets were very cool, but has mentioned to Rose that they're starting to unsettle him. Bro has one signature ventriloquism puppet he uses to rap and is never far from: Lil Cal. He enjoys playing mind games and is stealthy like a ninja. He is a master of different kinds of Modi. He knows how to weaponize a Sylladex, and according to Dave, the two brothers often have "hashrap" battles, where they insert keywords into rap to launch the contents of their sylladices at each other.

Dirk seemed to lack any sense of self-awareness or empathy in his methods in preparing Dave for Sburb (or whatever he was preparing him for exactly, if anything at all), such as his tendency to deprive Dave of food and deliver constant physical abuse, which Dave later describes as totally sociopathic HS in nature and believes he saw raising a child as a game, or some form of top-tier irony. He holds martial prowess and fighting above all else besides puppets, as he started Dave's training when he was just a baby. Many of his interactions with Dave only involve violence and his constant poker face is never broken by body language, to the point that Dave likens him to a robot. He never shows anything resembling remorse for his parenting methods, which correlates with Dave taking years to realize exactly how bad his situation was. It's implied that Lil Cal's influence played some factor into his behavior; considering that Lil Cal has been able to mentally destabilize other people in mere seconds and Dirk spent over 30 years with him, this is practically confirmed.

Aside from rapping and over the top violence, Dirk also took to creating chatbots that he would have autonomously bid for his obtuse smuppet pornography as a means to generate money. According to Dave, these chatbots would always be almost, but not quite at the precipice of becoming self-aware.