Deathstroke

Real Name - General Slade Wilson

Alignment - Evil

Status - Alive

First Appearance - Pilot

Last Appearance - Fear

Story
When we first meet Deathstroke he was sent to kill Martian Manhunter by three dark figures to which he succeeded doing.

In episode 2 he tells one of the dark figures he works alone after the dark figure said Adam is getting another soldier.

In episode 4 he locks up Jimmy Olsen next to Batman.

Kills
Martian Manhunter