Guardian: Human, NornWarrior: Charr, Norn, HumanElementalist: Asura, SylvariNecromancer: HumanRanger: SylvariRevenant: Human, Charr and NornMesmer: HumanEngineer: Charr, AsuraThief: Human, Sylvari, Asura Human and Charr really fit to Guardian- honor and sacrifice are rooted deep into those races. Charr, Norn, Human are most suitable to Warrior- the most experienced races in battle. Elementalists compose the magic of the elements, Sylvari do it naturally by contact with the nature, Asura with their technology to obtain and weave those elements together. Necromancer to Human, because this is the only race that makes graves. ;D Ranger to Sylvari- pets, nature etc Revenant- fits to all of races but to those 3 especially. Mesmer- maybe because the greatest mesmers are Human? ;) Engineer- Asura and Charr- the most advanced Races in technology and inventions. Thief- the skinny races are the best, how can you even imagine a norn thief?? 3 meters long, stomping like t-rex. XD same with the Charr- their long tail is not much helpful in sneaking up. ;D So thats it.