The H&K MP5K is a compact variant of the MP5. It debuted during Madness Combat 3: Avenger, in which Hank used one against several grunts. It reappeared in Madness Combat 4: Apotheosis with only a slightly modified design. In Madness Combat 8: Inundation, it underwent a complete redesign with a more detailed image. The Auditor spawned two of these to use against Jesus. Near the end of the episode, the Auditor's computer was opened to a website with the following description of the MP5K: "This gun also shoots bullets, surprize, surprize. Booooooooring. I look at this gun and want to barf."