Sean Strickland's brother is, apparently, no different than he is. According to a pair of tweets from Strickland himself, he and his brother have found themselves in altercations with others before, and the violent Strickland streak isn't exclusive to Sean. Moreover, neither is a love of firearms.
As Strickland says, he has had to tell his brother to keep his hands from his firearm collection. Every time he visits, one of Strickland's guns disappears, implying that his brother pillages his collection for his guns.
"Idk if this is just me but everytime my brother comes over he finger f***s all my guns and I end up losing one. The fact I have to tell a grown *ss man "guns aren't pointers" is insane lmao.. Do you guys use guns as pointers when you're talking to people??????????"
However, in a more alarming tale, Strickland recounted a past fight involving him, his brother, an unnamed third party, and said party's father. The former middleweight champion claims that after his brother was stabbed, he struck Strickland by mistake.
"One time we were at ****** at 3am and someone stabbed him. I ended up knocking him out after. Then my brother hits me in the back of the head with a chair by mistake... then the guys dad steps up, pulls out a knife and I knock him out after. My brother always practically raised me lol"
While Strickland has never given his family much visibility, especially at high-profile UFC events where he fights, he appears to have a fairly close relationship with his brother.
Sean Strickland also had a close relationship with his grandfather
Due to how often his father subjected him to violence, Sean Strickland had a contentious relationship with him during his childhood. Instead, the parental figure he turned to was his grandfather. Unfortunately, this led to Strickland adopting his grandfather's neo-Nazi ideology and racist views.
Eventually, however, Strickland broke free from his grandfather's views and forged his own path. Though the trauma his father subjected him to remains an unresolved issue that was brought to light during the buildup to his first fight with Dricus du Plessis at UFC 297, which he lost via split-decision.