Hellava Boss Theory: Why does Blitzo go by Blitz?

In the series “Hellava boss” the character Blitzo changed his name to Blitz in the show for an unknown reason. This post will be a speculation on why he changed it. Before I write about Blitz I'm curious why his sister seems to disown her family crest on her forehead. Both Blitz and Barbie(her name is Barbie not the doll brand) have their family crest on their foreheads however Barb’s crest is crossed off. Blitz had an abusive relationship with his father. He may have been ridiculed by his father after accidentally burning their family tent down and accidentally killing his mother in the process. As a result he could have had too much to handle dealing with the loss of his mother and his home he could have disowned his Father by this point subsequently disowning his name. I think it's possible that they both were abused by their Father and through his manipulation they were taught to fight each other especially when he realized Blitz was not very good at clown work. Maybe the Father banished Blitz after the accident and subsequently told everyone not to let him back into the group and lying to Fizz(as Fizz confirms in one of the episodes) and Barbie that he abandoned them and that Blitz was the cause of the fire and death. Hope you have a great day or night depending on your time zone.