Answer:
Athena is known to be kind, generous, and loyal to those who worshiped the gods well, but is cold ruthless on those who dare defy the gods, like the mortal Arachne, who claimed she was a better weaver than Athena, even when it was the goddess who had invented the loom. The two had a weaving contest, and Athena won, then punished Arachne by turning her into a spider. Although she detests disloyal mortals, there is one god in particular who she can't stand: Poseidon, god of the sea. She once found him in her sacred temple with his girlfriend (Medusa), and turned her into the hideous monster she is known as today. Also, they had a rivalry over the ciy of Athens, both competing to be the patron of the city. She won, and he was left bitter.