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 go into 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 a servo-motor. 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.