Does anyone know what this onomatopoeia means?


So, I watch a lot of anime but one scene in an anime called "Jojo's Bizarre
Adventure" uses onomatopoeia very often, I'm trying to find out the meaning of
this one in particular

[![The Awaken My Masters
Thing.](https://i.stack.imgur.com/uwdLY.png)](https://i.stack.imgur.com/uwdLY.png)

(I don't know much about the Japanese language.)

I tried looking it up on multiple different platforms but no luck. I'm trying
to find out so I can understand the meaning in an upcoming project of mine. I
can't even tell if this is kanji!




It's ドドン, a variant of [ドン](https://jisho.org/word/%E3%83%89%E3%83%B3-1).
Something like this is very common in manga, but here katakana is used as a
visual effect in anime?

