Teles is the son of Herakles and Lysidike who is one of the daughters of King Thespius. During his stay in the court of King Thespius, Herakles impregnated 49 of the 50 daughters of Thespius. Among them was Lysidike who Herakles would lay with one night. The result of that particular encounter was Teles.
"by Lysidice he [Herakles] had Teles"
- Apollod. Biblioteca, 2.7.8