Kylo Ren's command shuttle is an Upsilon-class shuttle that Kylo Ren used as transportation during the First Order–Resistance war. This shuttle was normally utilized by top officers of the First Order to travel, and it contains many defensive systems to protect its valuable passengers.
The Upsilon-class shuttle has massive wings that makes it look intimidating like a bird of prey. The wings are equipped with several defensive systems. The upper ones have advanced sensors suites to scan for enemies and the lower wings have jammers and shield protectors. When landing, the wings rise and then retract, which covers the upper wings' sensors, protecting them with a thick armor.
Kylo Ren's command shuttle was present at the assault on Jakku when Kylo Ren met and killed Lor San Tekka and captured Poe Dameron while looking for the map that would lead to the missing Jedi Master Luke Skywalker. Later, it was on the battle of Takodana where Kylo Ren captured Rey in the woods and carried her unconscious in his arms to his shuttle.
The shuttle was at the battle of Crait, where Kylo Ren and General Hux led the attack to the Resistance base using several AT-M6 and also First Order AT-ATs. Kylo eventually left the shuttle to confront his uncle unaware that it was actually a Force projection.