Alias

Sensei
Nick Name
|
Civilian ID

Unknown

Onetime possessed by the spirit known as Jonah.
Occupation
Criminal
Legal Status
Unknown
Nation or Planet of Origin
Asia
Group Affiliation
League of Assassins
Base of Operations
Asia
Height

Sensei: 5' 3"

Jonah: 6' - Now without mass.
Weight

Sensei: 135 lbs.

Jonah: 180 lbs. - Now without mass.
Eye Color

Sensei: Blue

Jonah: Blue
Hair Color

Sensei: White

Jonah: Reddish Blonde
Skin Tone

Sensei: Mongoloid

Jonah: Caucasian - Now Ethereal
Known Powers

Sensei

Normal human with mastery of the martial arts.

Jonah

Disembodied spirit with the power to temporarily inhabit the bodies of living beings or the recently deceased, taking complete control of their actions.
Accessories
Resources of the League of Assassins.
Common Enemies

Batman I

Deadman

Rama Kushna
Regularly Appearing

Deadman Vol. 2 & 3

Strange Adventures
First Appearance

Sensei

Strange Adventures #215 (Dec. 1968)

Jonah

Deadman Vol. 2 #2 (April, 1986)
Creator

Sensei

Neal Adams

Jonah

Andrew Helfer & Jose Luis Garcia-Lopez
Origin
In ancient times, the goddess Rama Kushna was widely worshiped in the Orient, but eventually her worshipers forgot her or died away.

Still seeking to do good in the world, Rama Kushna recruited  the spirit of an unjustly murdered man named Jonah to act as her agent.  Granted the ability to possess the living, Jonah battled evil by possessing the evildoer and bringing them to the hidden Himalayan land of Nanda Parbat.  While within the cities walls, Rama Kushna controlled the minds of the wicked making them passive and benevolent.

In time Jonah grew weary of his task and requested Rama Kushna allow him to rest.  When she refused, he became enraged and plotted revenge.  Possessing the body of a master assassin, Jonah focused the resources of the League of Assassins towards destroying Rama Kushna and her hidden city of Nanda Parbat as the Sensei.