This used to be a very nasty looking Grover the pumpkin plushie. But Mr. Pumpkin has evolved quite a bit. My current version is no longer a badguy. He's a good sort who adventures and heroes around.
Mustaches and beards are something I've always liked putting on characters. As I continue to craft characters with facial hair I've started to "round" the mustaches/beards. I think it looks much nicer in felt than pointy strands of hair do.