https://www.cnet.com/news/apex-legends-season-1-everything-you-need-to-know/

Octavio "Octane" Silva is described as an adrenaline junkie on the Apex Legends website, and his abilities fit the bill. His tactical ability is a stim shot that lets him move 30 percent faster for six seconds, though doing so reduces his health. Fortunately, his passive ability is Swift Mend, which lets him replenish health over time. His ultimate ability lets him place a jump pad on the ground he and his teammates can use to launch into the air to escape or reach high places. 

You can buy Octane with 750 Apex coins ($7.50) or unlock him using 10,000 Legend Tokens, the currency you earn by playing the game.