|This article is about a/an mecha in Tokumei Sentai Go-Busters.|
- "SJ-05 Stag Beetle, take off!"
- ―Activation announcement[src]
SJ-05 is Stag Buster's Buster Vehicle which resembles a fighter jet. It can be piloted and can transform into a variety of forms each with its own function, chief of which is SJ-05 Stag Beetle. Its driver interface does not require a Buddy Roid- just a pilot utilizing the DriveBlade. However, the pilot of the SJ-05, Beet J Stag happens to be a Buddy Roid himself. It is rested on top of BC-04 during transport from Hyper Space.
Buster Animal SJ-05 Stag Beetle
It can also transform into it's Animal Mode, the SJ-05 Stag Beetle. Since it does not require a Buddy Roid interface, it does not have a Buster Machine mode per se. It has the ability to collect Enetron from its opponents.
Ace Stag Custom
SJ-05 can combine with Go-Buster Ace to become Go-Buster Ace Stag Custom, referred to as My Combination #2 by Beet J Stag. In this combination, Go-Buster Ace has the ability to fly, using SJ-05's thrusters as a jetpack.
Compared to Buster Hercules, SJ-05's main combination, Ace Stag Custom seems to favor agility and melee attacks over powerful ranged attacks of the former.