Nobody expects a three-minute Gundam special to be funny, let alone consistently land jokes about plastic model kits fighting each other. The comedy works because it takes SD Gundam absurdity seriously, treating tiny deformed robots with the exact same dramatic weight as the main series' actual tournaments. If you've ever built a Gundam model and wondered what would happen if your hands suddenly became part of the battle, this is the answer.
GUNDAM BUILD FIGHTERS: SD Kishi Fighters is a set of three short specials from 2014, each lasting roughly four minutes, released as extras with the first and second Blu-ray boxes of Gundam Build Fighters. The opening two episodes split a single SD Kishi Fighters story into halves, while the third carries the title A Letter. These are quick comedy mecha shorts, offered as light bonus material for fans of the main series.