Keanu calls a random bystander Gigantor because he’s tall. A lot of this movie is held together by loose goofy thread but that moment is long gone. And the dude is not even that tall.
PS: Why the hell does Hulu have the full screen version? I spent the whole movie thinking it was strange that they did a Hollywood action movie in 16:9 only to find out I watched the whole thing cropped! Not cool Hulu!