The Attuned

 Name: Epifanio Agnusdei
Nickname(s): Attune/Tune
Epithets: The Apostle of Every Face, That Which Fights with Fire, The Great Reflector, The Champion of the Eye
Age: Unknown (28, as of 035-01-01)
Gender: Unknown (He/She/They/It/Etc.)
Orientation: Unknown (No preferences, really!)

Species: Presumed Human
Physical Traits: Unknown. If Attune has their own appearance, nobody has seen it- or they just don't realize this weird little goopy, distorted slime-thing IS their true appearance. A lot of people probably think this, too, is an assumed form. Epifanio's body is human in shape, but not in makeup- it is comprised of a thick surface similar to soap bubbles filled with an odd, semisolid sludge.
Their body possesses several traits of note- When shifted, it is as vulnerable as the person they are copying. A frail human, like Nepecki, would still be frail when attuned.
When in their base form, they are highly sensitive to force- similar to a non-newtonian fluid, though with more active reaction. Sudden forceful strikes will find the surface of their skin hard and tense, while gentle touches experience a texture similar to a water-filled stim toy. The former still hurts- please do not hit them 'because you can'.
When Epifanio's mass is either depleted or exceeded beyond a certain point (especially with foreign objects, ie a large quantity of food), they enter a recovery state- lost mass must be replaced, and they then require their full energy to metabolize their contents. This usually means periods of deep rest, though they will attempt to avoid doing so if the danger has not passed. They are, because of this unique method of recovery, unable to be given conventional medical treatment. Do not doubt the extent to which the resident medical team has tried.
 
Bio: Of the Apostles, The Attuned is considered the most elusive and mysterious. They're known as an invaluble member of the Apostles, seen only in major public appearances and very rarely within the Church. [While many people believe this to be because they're extremely stealthy, it's moreso because they're usually attuned to a different Apostle.]

To those within the Church, The Attuned is undeniably the baby of the group. Church-raised and deeply faithful, Epifanio is known to be positive but naive, uneducated on life outside of the Apostles [and eager to find out more! even if they have to borrow some faces to do it]. Despite nearing their 30's, their enigmatic physical appearance makes people think of them as younger than they are, which probably isn't helping shake off the baby allegations.
Epifanio's family is all humans of relatively normal appearance and disposition- rich folk of the Center with a bit of a snobbish streak. Their parents were not particularly keen on raising a slimeball, even if they were more often shifted to match their twin brother, and hardly even hesitated when the Church became aware of Epifanio's Blessing and suggested they be brought in. Epifanio has... tried to reconnect with them. It's not gone well. 

Ability: Attune - Able to become a perfect physical copy of anyone they've met, usually gaining the target's skills or unique abilities in the process. The more they know about the target, the better the copy- sometimes with unexpected side effects. Extensive research on a target sometimes unlocks new information while they're attuned. While this ability is considerably powerful on it's own, it's kept in check by the ease with which Epifanio can be reverted back to their base form.

Strengths: Adapts easily to new situations, and can think on their feet- even if it isn't the most strategic choice. Doesn't really 'freeze up'; they can't afford to.
Weaknesses: Fairly useless without their ability. Socially inept.
Likes: Particularly rich food, Dressing up. The obsolete inner passages of the Church, and the stained-glass spire that's only used to keep old documents.
Dislikes: Fighting/killing, though they don't usually get the choice. Being forced to stay in their own form.

Content Level: SFW
Warnings: Eyestrain

Relationships:

The Godhead - Interesting. The only person Attune can't copy. 

Ad Remedium Dolores - Interesting. The only person that can copy Attune. 

Machidiel/Moonstruck - Practically brothers! Epifanio would go out of their way for Mack, and knows he'd do the same. 

The Agnusdeis - They don't want to talk about it.