Eclipse the Darkling

Eclipse the Darkling is a Black Arms soldier created as the species answer to Shadow the Hedgehog.

Shadow Fall
Eclipse was originally part of an experiment that delayed the New Black Comet's arrival on Sonic's World. As Team Dark–, he converses with Black Death, who tells him he will have to fulfill his purpose. When an ambush of Black Arms gains the upper hand against Shadow, Eclipse called off the attack and revealed himself to his "brother." (SU: #59)