As evidenced by his threat to Jessica, D. L. is able to revert his passengers to their corporeal state before successfully moving their bodies out of the solid matter - though whether it would be fatal is unknown. He can also use his power offensively. The most prominent example of this is when he kills Mr. Linderman by phasing his hand into Linderman's head and subsequently unphasing it. D.L. is also able to use his powers defensively, allowing objects such as bullets to simply pass through him, as seen in "Fallout". However, he has not demonstrated an ability to "phase out" objects that are already lodged deep inside of him.