Warrior

''"Warriors specialize in close combat. Fearsome and hulking, a Warrior's way is found more through brute force, grit and great resilience than guile and trickery. They use their great physical strength and prowess to pound the enemy and provide cover for allies." --AION wikia''

Templar
As the Tanking class, Templars utilize their high levels of HP and Defense to stay at the front of the lines, keeping aggro on themselves while their damaging allies destroy their enemy. They are not made to do high levels of damage, but can greatly increase their defenses with skills and hold out attacks longer than any class.

Templars can use Greatswords, which are slow in attacking but provide a high level of damage. Templars also can use a combo of SwordxShield or MacexShield. Depending on the stigma build of a Templar, if they have more magical based stigmas a Mace will be used, if there isn't magic based stigmas they will go for the common SwordxShield combo.

A special skill that Templars gain early on is the ability to aggravate enemies (also simply refereed to as aggro.). Aggro allows the enemies to be trained on them and solely on them. They also have a skill specially known to them as a damage conductor that allows the Templar to conduct damage from an ally onto themselves.

Gladiator
Gladiators are versatile weapon masters with the ability to tank and do damage. This allows them to play an extremely versatile role in any group. They are also known to be the best at close range AOE attacks.

Gladiators are able to use Greatswords, Polearms, Bows, SwordxShield, MacexShield, DaggerxDagger, SwordxDagger, or SwordxSword. Polearms are the most common, and word exceptionally well for damage and crowd control. Greatswords are a backup of the Polearm, but provide slow attacks. Bows are used for long range attacking as needed or when fleeing. The Sword or Mace with a Shield combo is used for when they tank although some continue to use Polearms. The Dagger and Sword combos are for quick bursts of DPS but are typically not mained and used as a switchable secondary.

Like Templars, Gladiators have the ability to aggro mobs.