There once was an ancient race of dark beings called the Darkin, of which only five remain. Aatrox is one of these five, an elegant killing machine when released upon the battlefield. He was sealed inside his own blade, and eventually found a suitable mortal host. The warrior became corrupted and was transformed, resurrecting Aatrox who wants to exact revenge for the decimation of his people.

He appears upon battlefields, causing the warriors to feel an insatiable bloodlust. He appears in Tryndamere's lore as a dark figure that slaughtered his clan, becoming the Freljordians nemesis. Legends throughout various cultures claim him to appear at various battles in some of the most iconic wars in history.

Aatrox's passive (also known as ITS NEVER UP WHEN U NEED IT) gets filled while in combat by using his abilities. Once it is filled he gains bonus damage and if killed while it is filled he revives (this effect only lasts for four seconds. Combine this with a guardians angel and he never dies (that's if you can successfully proc the damn thing). His Q is an aoe knockup, you jump to a target location and anyone in the center of the circle is knocked up for one second. It deals damage to surrounding enemies as well.

His W is a passive ability (with two forms) that gives you a bonus on your third basic attack depending on which you have selected. Thirst gives you a small heal and Price gives you bonus damage. Thirst does NOT fill your bloodwell though so keep that in mind. His E is a slow where you throw out two energy waves that converge; any enemies hit by it are slowed.

His ult is called Massacre (super edgy it's awesome). He draws in the blood of his foes, dealing damage and for each champion the initial "drain" hits, Aatrox fills his bloodwell by 20%. He also gets bonus attack speed and increased attack range. These bonus effects last for twelve seconds.