Tepo is one of the lesser gang bosses of Sigma Iotia II in A Piece of the Action, hauled in by transporter to the meeting where Kirk unites the mobs under the Federation.
Tepo is an Iotian gang leader in the Original Series episode A Piece of the Action. He runs one of the smaller territories on Sigma Iotia II, a planet whose imitative people rebuilt their culture around a book on Chicago gangs left behind by the starship Horizon.
Once Kirk decides the only way to repair the damage is to give the Iotians a single government, he has Oxmyx telephone the other bosses one by one. As each answers, Scott locks on and beams him to Oxmyx's office, and Tepo arrives bewildered with the rest.
Tepo is loud in his suspicion of the arrangement and of the Feds who claim to be taking over. A stun blast from the Enterprise on the street outside settles the argument, and he accepts a place in the syndicate headed by Oxmyx with Krako as his lieutenant.