1) American superhero 2) An epithet for Jupiter 3) Golden Age superhero 4) Jove 5) Jupiter 6) Jupiter tonans 7) Timely Comics character Found on https://www.crosswordclues.com/clue/thunderer
• (n.) One who thunders; -- used especially as a translation of L. tonans, an epithet applied by the Romans to several of their gods, esp. to Jupiter. Found on http://thinkexist.com/dictionary/meaning/thunderer/
Thun'der·er noun One who thunders; -- used especially as a translation of Latin tonans , an epithet applied by the Romans to several of their gods, esp. to Jupiter. « That dreadful oath which binds the Thunderer .» Pope. Found on http://www.encyclo.co.uk/webster/T/52