hmmm... lets see. hammer bros are pretty annoying. everytime you see them and dont have a fireflower you just run to them and jump to them. usually counting on luck (espacially if they havnt threw their hammers yet but you still touch them when they are going to). the squids are pretty annoying too. as long as there arent 2 boos that are close to you from each side they arent so bad. oh and those fish that jump on you when you are on bridges
He's really annoying in the water stages in Super Mario World (I think the water stages is the only time he makes an appearance) but he's annoying nonetheless.
hammer bro's because when you jump up to kill them they hit you with a hammer, making it really hard to kill them. Not to mention there's lots of them at a time..
i havent played a mario since mario bros on the nintendo. the bosses i hated were the one that floated on a cloud and threw down spiked turtle things, and the one who throws hammers. i remember at the first boss there was a cage u could climb on to get to the other side of this lava and i was only like 6 or 7 when i played it and i died there and got pissed
i mainly hate the mouse enemy that was included in the very first mario game ever but not in the rest. (probably fired) apparently the bullet is quite a tough enemy as well cause heavy once quoted...
"i have yet to meet one who can outsmart the bullet"