Full Name: Unknown
Codename: ForgetMeNot
Race: Mutant or Super Hero (rare to find humans): mutant
Earth-616 Counterpart: (if a canon, what is your character known as in the comics): ForgetMeNot
Age: unknown
Affiliation: The Resistance
Base of Operations: Catacombs under Neo-X
Power(s): ForgetMeNot was a mutant who was stated to be in a state of constant existential superposition: Both real and unreal. "He's literally written out of the story".

Consequently, his abilities include:

Imperceptibility: ForgetMeNot is incapable of being perceived or remembered by virtually all individuals. When ForgetMeNot is not directly within view of an individual, his presence, existence, and any memories of him completely disappear.
Telepathic Imperceptibility: Although Psylocke was able to detect a psi-trace of him, she was later unable to catch it back while ForgetMeNot was only a few meters away from her.
Undetectability: ForgetMeNot's abilities also interfere with individuals' aim and targeting telemetry of mechanical devices.
Once near-to-death, Nemesis, the Yellow Eye members and their drones forgot about him.


Weaknesses
It was proven that his powers aren't in fact complete, could be countered by various ways and had some limitations:
After becoming imperceptible, he left people with memory absences, that Psylocke eventually perceived.
As he still exist, his actions on things can be perceived, like his use of supplies and toilet paper, allowing people to logically conclude that he could exist.
His powers were shown however to be leaving some noticeable distortions on camera records.
A detector trap was able to catch him.
Some kind of tech like S.H.I.E.L.D. Helicarrier Pericles maintenance bots, who stated themselves to "invisible too", were able to remember and interact with him.
Fantomex was able to detect him. He later revealed he was able to remember ForgetMeNot all along, using his heightnened senses and/or his engineered brain.
He can be psi-tracked, although he was telepathically invisible some instants later.
Using an experimental Hypercoffee, Nemesis (in "a state of mathematical awareness") was able to witness him, allowing him to see and remember ForgetMeNot, and even "ssssmell in color" him. Nemesis' Quantum Coffee had the same effect.
Even dead, Fantomex and the maintenance bots kept memory and perception of him. It was later revealed that the bots were controlled by MeMe.
ForgetMeNot has no control over his powers.
According to Fantomex, ForgetMeNot was overweight.

Avatar: David Harbour


Brief History: ForgetMenot's history is difficultto track because of his mutant power. What is known is that he when the Mutant/Human war broke out, he sided with the Humans, and inevitably ended up working for SHIELD. Because of his mutant abilities, ForgetMeNot has long been able to elude Imperial Forces, as he attempts to coordinate as many guerrila operations he can. ForgetMeNot operates out of a crashed SHIELD helicarrier known as "Pericles"; which is located within the Wastelands about 30 miles outside of Neo-X.