Dak Jeebs is one of the brothers Jeebs and is an enemy of MIB.
He was employed by Alpha, in an attempt to hijack one of MIB's satellites, but his plans failed when J and K interfered. He was defeated when he was blasted out into open space where he could not regenerate due to lack of oxygen. He later returned fused with Alpha. They went to Earth to obtain a Bio ship with the intention of destroying Earth. He was defeated by J.