Darkness

Darkness is one of The Three Brothers of Death. He has control over darkness.

Helping Roboblaze
The Three Brothers of Death (Destructor, Inferno and Darkness) were created by an unknown creator to help Roboblaze when he most needed it.

Roboblaze was introduced to Inferno and Darkness by Destructor, who he had met by accident while searching for Darkoboblaze and Johnson. The three of them explained that they are The Three Brothers of Death and they were created to help Roboblaze when he most needed it.

Roboblaze used his computer to find the location of one of Darkoboblaze's top secret labs. Roboblaze entered the lab but was captured by Mega Roboblaze. The Three Brothers of death arrived just in time. They used their powers together to create an explosion which damaged Mega Roboblaze but sacrificed themselves in the process. That left Roboblaze free to destroy Darkoboblaze.