Jake Bullet is a half-human, half-robot detective in the
Cybernautics division of the police force. He is
Kryten's
alter-ego in the
Red Dwarf episode
Back to Reality. Since his personality had not been fully restored when he shot and killed a human-being, the mechanoid in him was quite distraught, and Kryten was quite prepared to kill himself.
Spoiler (but not much of one - ROT13): Sbeghangryl, ubjrire, Ubyyl jnf noyr gb vafgehpg uvz gb hafperj gur gbc bs n sver rkgvathvfure naq sybbq gur pnova jvgu Yvguvhz Pneobangr, guhf fnivat gur yvirf bs gur perj. Vs guvf znxrf ab frafr, jngpu Onpx gb Ernyvgl naq vg jvyy nyy orpbzr pyrne.