How safe are the seats on Behemoth? (Wonderland)?

The metal bar is just part of the safety restraint on Behemoth. While the metal bar goes between your legs and keeps you securely in place, there are also two indentations where your legs go that are smaller than where you bottom sits. In other words, your bottom and hips cannot slide forward where the legs go, so you don't fall out. Behemoth is perfectly safe UNLESS you do not meet the minimum height requirement. Also, Behemoth does not go upside down, so it does not need as much of a safety restraint as a coaster that does loops.