Dream Rider

Dream Riders are spirits who feed on people's unrealized fantasies and wishes. They 'jump' into people while they are sleeping, taking root in the person's subconscious where they communicate with their new found host. Once 'infected' with a Dream Rider, the host, after going to sleep, will immediately reawaken, this time under the control of the Dream Rider who will empower them to live out their fantasies in real life.
While acting out their fantasies, the host of a Dream Rider experiences it all as if in a dream. Afterwards they will not remember it, or only remember it vaguely - just like a dream. The Dream Rider itself feeds off of the joy and exhilaration of the host as they realize their hidden desires for life. 
Dream Riders empower their hosts with telekinesis, slightly increased strength and heightened senses. Also, if the host is a Supernatural, a few of their natural specific powers will suddenly be increased (but only when "dream walking"). In fact, all of the powers granted only apply when the host is under the influence of the Dream Rider.
Dream Riders do not normally communicate with the host's conscious brain, only their subconscious. 
The spiritual energies unleashed by the Dream Rider's act of feeding rejuvenate the host's body and mind, ensuring that nights spent out on the town do not result in a host ready to collapse from exhaustion and lack of sleep during the day. 
Most hosts to Dream Riders may go years before discovering they are host to such a spirit entity. Strangely, when confronted with the reality that their pleasant dreams are, in fact, real, many hosts choose to keep the Dream Rider!
Dream Riders will build a 'second life' for their host's nightly escapades. They do not want anyone who knows their host to run into them so they will often go to great lengths to ensure their host remains in separate circles from their daytime routine.