Boombomon is a Dragon Digimon whose name is derived from a "Boombox". Boombomon is loud, very loud when enraged or overly excited about something. It's Microphone it had as Shoutmon is gone, as now it had fused into it's tail as it's tail now replaces it in functions. It's tail is capable of emitting any kind of sound, even sounds not found naturally in nature. It prefers to use this ability to create a beat or tune as to which to sing to, and it's singing voice tends to match it's fiery personality of being a hardcore rocker. It's Boom Tail is capable of emitting sounds so loud they can shatter boulders with their sheer force.
Boombomon is the Champion Form of Shoutmon. It also digivolves into OmegaShoutmon, but the design of OmegaShoutmon is much different from how it actually looks, much like with AtlurBallistamon and JagerDorulumon, also looks incredibly different from it's actual design.