For official mascot I think the Hen-tie chicken seems to be the right candidate. But I have a feeling you're talking about Fakku-tan...
There was one time when I was browsing Hongfire and seeing them coming up with a HF-tan for their site and I suddenly wonders what would happen if Fakku had it own Fakku-tan? How would she looks like? Out of curiosity I just did a doodle of F!-tan and came out with this... Its not that good but I kinda like it.
She's a caffeine addicted double chainsaw wielding demon girl who wants to paint the whole world red.
Personally I wonder what the other artist, they might come out with something better than mine.