What is the Boston Celtics’ best-kept secret? For one analyst, you might call him ‘Batman’

Another hint: He’s not the bouncy lord of time, though they do share a name.

Every team in the league has its own best-kept secret of sorts, a player who can be unleashed in a moment of need who can do more than a casual fan might expect.

Such players are seldom in the limelight despite their steadfast utility, making them not ENTIRELY unknown factors, but enough to qualify for a recent thought experiment by Bleacher Report’s Zach Buckley.

For the Boston Celtics in this exercise, it is a player who actually was the opposite of reliable starting out as a pro. Since that inauspicious start, however, he has grown into a quiet pillar of the team — and the chatterbox of the roster.

In case you haven’t guessed, we’re talking about Batman. Not the superhero, but reserve forward Grant Williams.