The Seleucid

The Seleucid was a Greek soldier who fought in the Gladiator Arena of Cyrene, utilizing a long military pike as his weapon of choice.

In 47 BCE, he was challenged by the Medjay Bayek of Siwa, who witnessed him throwing a sword at one of the spectators in the arena. Bayek later defeated the gladiator which a spear and shield.

Reference

 * Assassin's Creed: Origins