In Greek mythology, Iobates /aɪˈɒbətiːz/ or Jobates /ˈdʒɒbətiːz/ (Greek: Ἰοβάτης) was a Lycian king, the father of Antea and Philonoe. (This Iobates is sometimes named Amphianax.) Bellerophon was sent into exile to the land of King Iobates. Proetus, King of Tiryns, wanted Iobates to kill Bellerophon, but Iobates feared the wrath of the gods if he murdered a guest. So he sent Bellerophon on a mission that he deemed impossible: to kill a fire-breathing monster, the Chimera.
An alternate version of the beginning of the quest is that Bellerophon encountered Proetus, who grew intensely jealous of him. Proetus was the son-in-law of Iobates, and sent Bellerophon to him with a sealed message that asked him to kill Bellerophon. Lycia at the time was in the middle of a horrific plague and Iobates didn't want to strain the population with a war, which would surely result if he murdered Bellerophon. Instead, he sent him to kill the Chimera.
The goddess Athena, realizing Bellerophon would surely die if he undertook this task alone, sent him aid in the form of the winged horse, Pegasus. Alternatively, Bellerophon sought out the wisest man in Lycia, Polyidus, who told him about the horse. To obtain the services of the winged horse, Polyidus told Bellerophon to sleep in the temple of Athena. While Bellerophon slept, he dreamed of Athena setting a golden bridle down beside him; it was there when he awoke. Bellerophon had to sneak up on Pegasus while it drank from a well (Polyidus told him which well).