Drehen-Transient Estate version

Name: Drehen
Gender: Fluctuates depending on the situation.
Species: Human (abnormal, psionic, parasitic)
Orientation:
Age: 40
Appearance: Though it changes occasionally, usually appears as a dark-haired loli.

Power: Originally a normal psionic human, Drehen's power is dramatically augmented by a connection to a certain "host" eldritch abomination. Obviously shapeshifting is one such ability, but it's limited to human forms. Others include physical enhancement, dimensional warping, and a mysterious ooze that can be controlled like a morphable appendage.

Personality: The connection with the aforementioned host has left Drehen's psyche somewhat unstable. At best, it's fairly normal, even cheerfully extraverted. At worst, it's an introverted, neurotic mess. In either case, however, there's a considerable amount of childlike qualities to it.

Background: Originally an ordinary human, Drehen discovered latent psionic abilities in early adulthood. Starting as a basic psionic human, Drehen's life became even more bizzare when a second, parasitic ability suddenly activated, connecting Drehen to an enormously powerful eldritch abomination. Drehen's psionic abilities prevented total consumption, but as a trade-off, only a tiny portion of the abomination's power is available for use. As mentioned above, the connection is also mental, and as a result, Drehen's mind periodically "collapses" roughly every ten years, randomly wiping out information about personal experiences. As a result, Drehen's original identity is unknown.
After stumbling upon the Transient Estate by sheer accident, Drehen has since become in its employ, though, it would seem, not by choice.
With the arrival of a mysterious woman claiming to be Drehen, life in the mansion has become far more complicated...She claims to be Drehen, but how is that possible? After using a strange new power, Drehen finds herself looking like a mirror-image of the mysterious woman...As it turns out, the woman, who calls herself Regen, is a future version of Drehen.

Spoiler:

"Place" variation:

Drehen: See above, divide by lulz.

Heather
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Gender: Female
Species: Human (unaging, no other special properties)
Orientation: N/A
Age: Unknown
Appearance: Long light-brown hair, appears to be in mid-twenties.

Power: Other than a perpetual lifespan, none. Not to be confused with the other variant, to be added later.

Personality: Snark.

Background: Is Drehen's "sister". Has survived many years by virtue of sheer deadpan crazy-preparedness.

Helkugl (variant)
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Gender: Male
Species: "Fairy" (is actually a unique, unclassified species similar to both fairies and will o' the wisps.)
Orientation: N/A
Age: Unknown, but young for his species.
Apperance: Appears to be a color-changing orb from a distance. Looks like a young child up close, with short hair and a robe.

Power: Everything you'd expect from a small floaty thing.

Personality: The complete reverse of the "other" Helkugl, this version is timid, spacy, and somewhat childish.

Background: In his own words..."Hey, look, shiny~...wait, what were we talking about?"