Security Guard- This popular job is in charge of keeping everyone on the station safe. As such, it is the only job with a real weapon. The Fizzinator is the best One Node card, hands down. The Spindly Krill is a medium ranged attacker with strong defense. It is ideal for breaking those last few hearts.

PROS: Plays well on its own, while working very well with just about every other job.

CONS: Security Guard is a real one trick pony. Aside from the Fizzinator, s/he doesn't really have anything to write home about.