Thus, a brief analysis reveals commonalities between these three deities. Indra and Zeus are also associated with the bull. The three deities are seen in conflict with their families. Thor is not the king, but is the son of Odin, the king of gods, and hence, is still divine royalty. Both Indra and Zeus are the rulers of gods within their own pantheon. Indra kills vrtra, Zeus kills the titans, and Thor kills the jotnar (giants) among others. These weapons, strongly associated with thunder and lightning, are used in myths to kill several characters.
They are all thunder or storm deities and are associated with a particular weapon: Indra with Vajra, Zeus with Keraunos and Thor with Mjollnir. Indra of Vedic, Zeus of Greek and Thor of Norse mythology are three such deities that seem to have many similarities. When one looks at mythology across different cultures, certain similarities can be seen not only in the themes and motifs of the myths themselves, but in the myths and iconography of certain deities with similar features.