First Come, First Served is the third solo studio album by American recording artist Kool Keith, and the first he released under the alias Dr. Dooom.

The album featured guest appearances from Jacky Jasper and Motion Man, and was produced entirely by KutMasta Kurt and Kool Keith.

[2] The album's concept involves a serial killer named Dr. Dooom, who has a fondness for "cannibalism, pet rats, and Flintstones vitamins".

According to Steve Huey, this "[signals] Keith's desire to move away from the alternative audience who embraced that album and back to his roots in street-level hip-hop".

[2] Huey states that the album's lyrics are "way too far out to fulfill Keith's aspirations; he simply doesn't fit into hip-hop's obsession with realism.