Zachary loved his visit for two very special reasons. It was Zachary's wish to meet Hellboy and also to become Hellboy. When the Make-A-Wish Foundation contacted Spectral Motion with this request, Mike thought it would be fantastic to have Ron Perlman reprise his role for the day. Ron loved the idea and donned the makeup once more (with the assistance of Lufeng Qu and Eden Elizalde) and also ordered a Hellboy sized meal of burgers, shakes, and fries for Zachary and his family and the entire Spectral crew to enjoy. Later in the day, Zachary was transformed into Hellboy with the assistance of makeup artists Lufeng Qu and Neil Winn. Both of the Make-A-Wish days were a complete thrill for the families of the children, as well as for the crew at Spectral Motion!
The above quote is from the geekologie article, I just gotta say how cool it was that Zachary got to live the dream, and congratulate Perlman on such a classy move.