MELBOURNE has locked away Max Gawn until the end of 2018, with the form ruckman agreeing to a three-year contract extension.

Gawn has had a breakout season in 2015, playing 10 consecutive matches for the first time in his career and establishing himself as the club's No.1 ruckman, moving ahead of Mark Jamar.

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Gawn was introduced by Roos as 'Mr Invincible' on Friday as he announced his extension after telling a journalist earlier this season he had felt "invincible" during a contest against Geelong.

It's a nickname he is yet to accept, but it didn't stop him signing on at Melbourne, where he can see a bright future.   

"I haven't done much media work and after the Geelong game one of the guys asked me how I was feeling during one of the contests and I answered 'invincible'," he said.

"The next day my name was thrown on the board 'Mr Invincible', so 'Roosy' didn't let that one slip.

"I'm not the biggest fan of it, but I've become accustomed to it."

Gawn said future coach Simon Goodwin and ruck coach Greg Stafford had played key roles in his impressive recent run after being left out of the team in the first nine rounds due to poor pre-season form.

"I wasn't picked in the round one side and I took that pretty poorly … but once I cracked in I've started to enjoy my footy," he said.  

"With my last few contracts I've been doing them around the same time as this is now, so the timing has worked out."