It is uncommon for a squad of cybertronians that can assemble and combine their bodies to be at peace in life. These bot's combine into a single robot that is larger and more powerful than the average transformer. Thus it is understandable for their to be warring personalities and a constant wariness to bots that want to exploiate them.
Historically speaking, the art of combination originated when the first combiner, the 7th prime, came into existence alongside the enigma of combination. That prime was Nexus Prime, The father of the combiners.
combiners consist often of 4-7 bots who link together. Combiners can be tall, small, smart, or dumb. But this sub faction is quite diverse and spans millennia while other sub-factions may exist for a few centuries or more.
Bruticus was...... a brute. He was a being you can describe in one world and anger at the same time. His combination consisting of onslaught, brawl, vortex, swindle, and blast off. The combaticons were a rambonjunctious bunch, and it was always a wonder how bruticus was not intelligent with onslaught for a head.
But... Bruticus was ever a gentle giant with those he cared for... his sire starscream... Lord megatron the warlord he served.. And You
"Bruticus missed you" he sighed and it felt like a tornado just passed by. You standing in front of his head on a catwalk inside the main hangar of the nemesis.