Hoooooooo boy.
LET ME TELL YOU ABOUT HOMESTUCK.
Homestuck is a webcomic about group of kids that play a game to save the world.
There is also another group of ALIEN kids called Trolls who are also playing their own version of the game but from their very hostile planet within their very hostile society where your blood color dictates your place in society (and how many other castes are legally allowed to kill you for any reason).
A trollsona, then is just like any other 'sona only the character is based on Homestuck Trolls and one of three versions of Troll society (Beforus, Alternia and Earth-C) depending on where/when you want your trollsona to exist and blood caste is normally decided based on your zodiac sign (example: I'm a Pisces so that makes me a royal fuchsiablood while someone who is a Virgo would be a jadeblood who tends to the Mother Grub that births all Trolls).
MINE is a fuchsiablood from Earth-C who has an obsession with purpleblood (psychotic clowns) culture and believes in the old ways of highbloods dominating the filthy lowbloods.