Thundurus is the third Electric/Flying Pokémon, the others being Zapdos and Emolga.
Coincidentally, Zapdos and Thundurus are both part of legendary Trios and have the same types.
Thundurus's appearance resembles a Djinn.
Thundurus also appears to somewhat resemble Zeus, because it flies around on a cloud causing Lightning to rain down.
Thundurus's species happens to be one of Zekrom's signature moves, Bolt Strike.
It is said to be the only thing to make an entire lap around the Unova region in a day, but the player also can do this when a bike is equipped.
Thundurus, Zapdos, Zekrom and Raikou all have something in common.
All of them are part of a legendary trio.
All of them are electric Pokémon.
All of them are legendary.
Thundurus's name is a misspelling of the word "thunderous". The choosing of this name is possibly due to the end of its name having to match Landorus and Tornadus' and when it uses lightning, thunder accompanies it due to hot air particles brushing against cold.
Despite Thundurus being the Bolt Strike Pokémon, he cannot learn the move Bolt Strike.
Thundurus and the rest of the Kami trio will have 3DS and AR searcher app exclusive forms in Pokemon Black 2 and Pokemon White 2, called "Therian Formes", while their current forms are called "Incarnation Forms".
While Thundurus has a gender, it still cannot breed because it is in the undiscovered egg group.