In the appearent lack of a thread about this.
Helix's name was choosen to represent the two different sides of her persoanliy at the ime of her creation, and how he intetwined with each other.
Pixel's name was pretty random when she split from Helix. I still don't know where the name came from.
Solace's original name was Vriska, which was the name of the character I based her off originally. It was an inappropriate nqme, so I thought for days of a better one. Then one day, the name Solace popped into my head. At the time I didn't even know the meaning of the word, it just sounded nice.