He was elevated to North Melbourne's senior list in August 2011, after playing well for North Ballarat in the Victorian Football League and was named to make his AFL debut in Round 22 of the 2011 AFL season against Fremantle.

[2] Mullett made his debut against Fremantle in number 41 and impressed with 17 touches.

Mullet was the round 2 nomination for the 2013 AFL Rising Star after a 20 possession and a goal against Geelong.

He played thirteen games for Carlton during 2018, then was delisted at the end of the season.

[6] As of 2023, Mullet plays locally in the Outer East Football Netball League For the Wandin Bulldogs.