Cybertronian Martial Arts
There are several forms of hand to hand combat on Cybertron dating back to ancient times. Their exact origins are undetermined, but they are powerful tools who know how to wield them. Some of those practiced by remaining Cybertronian martial artists are:
Circuit-Su
Circuit-Su focuses on the training of the mind as much, if not more, than the physical body. A highly mental art, its students believe that by harnessing their personal energy they can bend others to their will. Practitioners are characterized by their solidarity and iaconic natures, and the Circuit-Su combat techniques focus on turning an aggressor's attack against them. It is rumored that advanced practitioners can actually call up their Spark energy to act as physical bolts of energy when attacking foes.
Crystalocution
Perhaps the most physical of the cybertronian martial arts, Crystalocution is primarily concerned with dominance in basic hand to hand combat. Its practitioners eschew the spiritual conditioning of other martial arts in favor of physically conditioning themselves to perfection. Crystalocution attacks focus on a series of movements to determine and target an opponent's weak points; such assault trigger pressure points in the crystalline structure of a structure/opponent, shattering them.
Diffusion
No longer a strictly defined discipline, Diffusion is now the catch-all term for a series of non-lethal movements traditionally favored by the Autobots. These defensive maneuvers are primarily designed to serve the goal of self-defense, dissipating an enemy's aggressive energies. As the war developed, some Autobots have also effectively adapted the technique to redirect an opponent's hostile overtures into a powerful retaliatory attack. In its purest form, a true master of Diffusion can repel all physical attacks without putting himself in danger of permanently damaging his attackers.
Metallikato
Metallikato is perhaps the most arcane and rare of the Cybertronian combat arts. It incorporates elements of the mental conditioning of Circuit-Su, along with the hand to hand combat of Crystalocution, but it also mixes in a strong element of spirituality, encouraging practitioners to attune themselves with powers higher than themselves to attain their goals. Metallikato has a strict code of ethics that its students are required to follow in order to achieve true mastery. The combat attacks range between standard hand to hand to edged and blunt weapon attacks, providing practitioners with versatility in battle that is difficult to match. Although it emphasizes variety as a different means to superiority, master of edged-weapon combat is the primary hallmark of those who study Metallikato.
Pit Fighting
Pit fighting is one of the most brutal and barbaric attack forms on Cybertron, used by the more powerful gladiators to dominate their foes in battle. The technique is largely improvisational, but it hinges on a series of ruthless maneuvers that maximizes the attacker's willingness to employ lethal finishing moves to win a battle. Megatron and Grimlock are some of the most skilled masters of this attack method.