FOXBOROUGH, Mass. — To step into Martellus Bennett’s world is to be in a place that is both spontaneous and full of introspection.

In his first season in New England, the tight end has brought a mellow vibe and unique personality to an organization that shies away from individuality.

Yet, as he prepares for the first AFC championship appearance of his nine-year career, Bennett could play a vital part in whether the Patriots get past the Steelers on Sunday and earn the franchise’s ninth Super Bowl berth.

But the player who calls himself “a black unicorn” said he isn’t allowing himself to get caught up in any championship fantasies or letting the moment affect an approach that has been unchanged since he was traded by Chicago to New England this offseason.

“The triple C’s is how I am: cool, calm and collected. I kind of roll with it,” Bennett said.

With Rob Gronkowski on injured reserve following season-ending back surgery since early December, Bennett, 29, has stepped up nicely. His career-high seven receiving touchdowns led the team and his 701 receiving yards were second to Julian Edelman’s 1,161 yards.