so i once saw a twitter post about barney being 5'6", and on this very wiki it says that gordon is 5'10", but from what i can tell neither the post or the wiki page mention a source anywhere (i think)... so i'm curious
eh, i wouldn't count on that tbh, all that does is just give an idea of how tall characters are compared to each other, not their actual heights... and gordon never got an official model in hl2 anyway