K-9

K-9 is a joinable NPC in Fallout 2.

K-9 the Robotic Canine Companion can be found at Navarro in Doc Schreber's office. You'll need the K-9 Parts found elsewhere to reactivate him.

K-9 hates Doc Schreber with a passion, but only because it considers Schreber evil. The robodog will only follow you after he's dead, as long as your character isn't a Childkiller or have a Karma rating of -101 or less. If you do become a Childkiller or drop your Karma below the limit, he'll leave the party forever.

How to obtain K-9
To obtain K-9, you must complete two requirements. One, you must repair K-9's leg mechanisms with a servo-motor (one is available in the mechanic's shop on the Enclave base Navarro - when you request the Vertibird plans from Raul, keep searching his toolboxes and lockers until you find it). Using this servo-motor on K-9 will fix him. Two, you must kill Doc Schreber. Due to the room being soundproofed, make sure the lab door is closed before you do it.

Statistics

 * Hit Points:       127
 * Skill:     Unarmed
 * Carrying:             0/175
 * Melee Damage:     16
 * APs: 14
 * Disposition:      Berserk, Aggressive, Defensive, Coward

Trivia
K-9 is one of at least two Doctor Who references in Fallout 2 (the other being the appearance of the TARDIS in the desert). In the long running British science fiction show The Doctor traveled at one point with a mechanical dog with the same name.