Name: Dr. Nathaniel Essex
Legal Status: As Essex, citizen of England during
the 1800s in poor standing with his scientific peers
Other Aliases: None known
Place of Birth: 19th-century London, England
Marital Status: Unknown
Known Relatives: Unknown
Group Affiliation: None
Base of Operations: Secret
First Appearance: UNCANNY X-MEN #221
History: Nathaniel Essex was a biologist in Victorian
England who developed advanced theories on human evolution.
A geneticist of unparalleled genius, he foresaw the coming
mutations that would transform mankind. However, his unorthodox
experiments resulted in his ouster from the Royal Society
and caused his wife to shun him. These rejections led
him to ally himself with Apocalypse, an immortal mutant
who has witnessed virtually the whole of human history.
Apocalypse transformed Essex into the ageless being known
as Mr. Sinister.
Sinister has conducted numerous experiments in his time.
He operated an obstetrics clinic in New York in the late
19th century and performed side research on society's
deviants. As Dr. Essex, he influenced the work of Herbert
Wyndham, the man who became the High Evolutionary.
Sinister plotted the course of certain gene pools for
more than a century, discovering that the combination
of Scott Summers' and Jean Grey's traits would produce
a mutant of incredible power. The future Cyclops was brought
to Sinister's orphanage in Nebraska, and the geneticist
collected a blood sample from the girl who would come
to be known as Phoenix to confirm his findings. Sinister
used that sample when Jean died to create a clone, Madelyne
Pryor, who later became the evil Goblin Queen.
Following up on his genetic pursuits, Sinister set in
motion the so-called "Mutant Massacre." A community of
mutants who considered themselves outcasts from society,
the Morlocks lived in tunnels under New York City. Sinister's
Marauders annihilated the Morlocks because he considered
them genetically useless.
Sinister first fought the X-Men during the "Inferno"
crisis, an invasion of demon mutants he helped create.
He sometimes aids Charles Xavier's team, but for his own
reasons. Sinister helped Gambit save the savage Sabretooth's
life, and assisted the X-Man again when he became trapped
in the 19th century; took in the mutant Threnody and provided
her with devices to control her energy releases; and returned
Courier, a messenger with the ability to control every
molecule in his body, to a more human state. In almost
every case, however, Sinister exacts a price very costly
to the soul.
When the High Evolutionary activated a satellite that
stripped all Homo superior of their mutations, Essex,
who had come to support his student's work, revealed himself
as Sinister and modified the beam to mutate every human
on Earth, hoping to create an entire planet of lab subjects.
Soon after, the mysterious Neo attacked many of Sinister's
Height: 6 ft. 5 in.
Weight: 285 lbs.
Eyes: Shining red, no visible pupils
Other Distinguishing Features: None
Strength Level: Unknown
Known superhuman powers: A brilliant biologist
and geneticist, Mr. Sinister also is immortal, granting
him a unique perspective on human evolution.
Other Abilities: None
Weapons / Paraphernalia: None
Picture was sent in by Chris Martin