Mechagodzilla’s appearance in Godzilla vs. Kong was the worst-kept twist in years. Theoretically, the robotic kaiju was intended to be a surprise third fighter in the epic brawl, but eagle-eyed fans spotted glimpses of him in the first trailer. In addition, Legendary Pictures and Warner Bros. weren’t too careful about showing him off at toy fairs,on T-shirts and in a Japanese TV ad. Despite all that, many were annoyed when Godzilla vs. Kong director Adam Wingard posted a picture of himself with a Mechagodzilla toy, arguing that it’s one thing for the marketing department to spoil the...