The most difficult boss

[Zeromus]

Wich one u think is the most difficult boss???

I know putting Omega and Shinryuu here is just killing all the others xD... but i wanted to put all the bosses i've known people had have more problems with...
This is what i've seen around internet about the most difficult bosses, cuz personaly, maybe we all have problems with different ones...
For example, i have more problems with the Gil turtle than with Neo-Exdeath xD... but i had to put Neo-Exdeath and not the Gil turtle cuz the final boss was considered more difficult than the gil turtle by more people...
So... it's a general view...

Maybe somebody won't choose Omega or Shinryuu... but i don't think so xD...
Maybe i couldn't put them both here xD...


Atmos: He can let u fighting just with one character, and u start to be nervous cuz u know that now is time for the remaining one to be sent to other dimenssion too...
Bahamuth: Well, he is God xD... The King of Dragons, and the more powerful esper, he had to be here...
Stalker: I've seen so much people having problems with this one... maybe he doesn't attack so much, but u can have a long long and really long and exhausting battle if u don't take him seriously...
Omega: Well... it's Omega... what can i say...???
Shinryuu: $€¬&#@!!! it's Shinryuu... !!!
Neo-Exdeath: Like every final boss he has the place his diserve on this kind of poll...