21011 LEGO® Brandenburg Gate Used Set Avenger a hidden knife trap

a hidden knife trap

and the version from "The LEGO Batman Movie" is a parody of this character

the minifigure is based on this appearance

And it looks like he has a special gift with him

21011 LEGO® Brandenburg Gate Used Set Avenger a hidden knife trapLEGO 21011 Brandenburg Gate is an Architecture Landmark Series set released in 2011, containing 363 pieces. It builds a microscale model of Berlins Brandenburg Gate and was designed by architect Adam Reed Tucker. The set includes a booklet with design and historical information, including the gates completion in 1791. It was the first LEGO Architecture set based on European, and specifically German, architecture.