Jaeger is German for Hunter, and that is exactly what this guy is. He was Domina's husband and a member of the Neo mutant group whom targeted out the X-Men for revenge. He was accidentally killed by Cecelia Reyes during their assault on the X-Men.
Jaeger had peak human physical attributes (strength, speed, stamina, etc.) and most notably his super human sent which can track down the tiniest of spoors. He does have some type of energy connection with Domina. He also has borrowed some of Domina's power to create an energy-line to swing around on