[spankibalt]

You are off your rocker dude; the Belphegor is weird, but certainly not ugly. You want certified ugly? You'll find it under the synonym DFW T.28 Floh.

https://en.wikipedia.org/wiki/DFW_Floh

[chuckadams]

I dunno about ugly, I'd call it a "Chibi Biplane".

[postepowanieadm]

Looks like a sun fish.