Mixed Martial Arts Gym "Wild Kingdom" is a stage in Tekken 6's Scenario Campaign mode. King and Craig Marduk are fought here simultaneously. Clearing this stage and defeating King and Marduk will unlock them in Scenario Campaign and Arena. This stage uses the missing Tekken 6 stage, Gym. This is the only stage featuring two bosses at the same time (not counting Panda since she was a sub-boss).