Can someone help me determine what this SFX/onomatopoeia is?


Here's an image of it:

![Manga SFX](https://i.stack.imgur.com/pnthX.png)

It kind of looks like ダダ (da da) to me, but then I'm not sure what to make of
the last mark. Could someone offer his insight, please?




It's either ダダー or ダタッ. Given that if it were a ー on the end then it would
probably be horizontally aligned with the other characters, I'm going to
assume it's a ツ, and because ダタツ doesn't seem to make much sense as
onomatopoeia, it should be a ッ (small-tsu). Given that it looks like a kind of
shorter 'impact' sound and not something extended or ringing, I think we can
rule out ダダー on both counts.

So my vote is for ダタッ!

