Ebony

putting this guy here to.

Ebony is a reploid who lives alongside his sister, Ivory.
He serves as he brawn of the two- while his sister brings his ideas to life via engineering 
He and his sister are quite opposite of each other- hes good at visual hobbies such as writing, drawing and gardening while his sister prefers handicrafts like metalwork and pottery.
They often argue and you could compare them as black and white, despite this, their sibling bond is enough to be the glue that holds them together and they wouldn't be themselves without that bond.