Souichirou Tenma is the owner of the Pegasus Garage and the boss of the five members of the Gekisou Sentai Carranger team. He is an automobile afficionato and always drives his prized vehicles to work, much to the envy of other car lovers such as Kyousuke Jinnai. He and his family are fans of the Carranger (even though he does not know they are his workers) and finds himself at the mercy upon occasion both at the actions of the Bowzock as well as Hazardian Dappu, who is using one of the garage's rooms as the team's headquarters in secret.