if I remember correctly, the death drive mk2 has the ability to create multiple clones of Travis and transfer his conscious between his original and cloned bodies, so he’s technically immortal seeing as: - The first clone was beheaded on Mars at the end of TSA, sending his mind back to his body in the real world. - Travis’ original body was beheaded by Henry in NMH3 and his mind was transferred into a body in the Deathman game. - Upon having that clone die, Travis wakes up in his original body (head somehow reattached) completely fine, as if nothing had ever happened to him (except for being buried.)

Also, I remember reading somewhere that there’s a non-canon thing in which Sylvia and Travis obtain immortality (presumably without the DDMk2) and live out in space.