Overshadowing

Overshadowing is the power to possess a human being, an animal, an object, a ghost or even a video game avatar.

Capabilities
Spirit possession is a paranormal or supernatural event in which the ghost takes control of a human body (as well as many other things), allowing the ghost to completely control that person's actions.

Applications
Users can overshadow a human being, an animal, an inanimate object, a ghost, or a video game avatar by phasing completely into the host's body. Once the user is in inside the host, he is in complete control of the host's actions and words, though the host's voice becomes that of the ghost. It is a great way to make a fool out of somebody or to enact revenge.

Even when overshadowing a host, a ghost can still use his powers of flight, intangibility, and invisibility. The host has no memory of what he or she did while overshadowed, but usually feels a slight dizziness and disorientation, and is occasionally influenced by what the ghost said or did in his body.

Dream Invasion
Danny has demonstrated that this power can be used to invade other people's dreams.

Limitations
On numerous occasions, it has been demonstrated that an overshadowing attempt can be resisted by willpower.