Darkseller63 is one of the Survivors in Hardcore Group Survival series.
Hardcore Group Survival
Doublepulse, LnD, Rewas and Darkseller started a hardcore group survival in a random world. Their survival was so far successful. They built their home in a cave, where they started to mine. Rewas later discovered diamonds. With them, he built a diamond pickaxe and gave away to LnDProductions. Later, sadly, Doublepulse and Darkseller were killed.
Ultimate Hardcore Group Survival
While not appearing in New Hardcore Group Survival, Darkseller was revived in Ultimate Hardcore Group Survival, where he help the survivors for a couple of days. When Rewas killed LnDProductions in the final battle, Darkseller's status became unknown. He's presumed to be alive.