The only inconsistancy i found was the episode set in the future. Claire was still alive YET Sylar had the regeneration power as Hiro had tried to stab him but Sylar had the ability to regenerate.
Everything else is plausible (well if you sugarcoat it enough :P).
And the idea that the invisible man dragged Sylar sounds feasible, best explaination yet. He could be working for "The Company", how many companies there are is unknown as i'm still not sure who the Haitian worked for either.
And cockroaches, they're scattered throughout the series, maybe it just semiotics to cause a discussion but some of the apparent inconsistancies keep the viewer asking for more (imo).

In chapter 23 the last thing we got to see was an eclipse. During the season issac paints a picture of an eclipse, Did he paint that far into the future? Or was this total fluke??

The final episode was soooooo rubbish! It hasn't put me off completely but very nearly! Why why why did they decide to contradict everything, Janice was all of a sudden a weakling, her husband took a bullet (when he could have just phase shifted) syler get almost killed by a sword when he just gets up and disappears after being shot 4-5 times. Peter.... so pitiful grrrrrrr I was infinitely disappointed, didn't anyone say to the creator "pal...why have you messed up so much of the story"

sorry to rant, but I think some people somewhere would agree with me! Oh... 5 years after was the best episode! :-)

well ui can say with assurance that peter is gonna live.
about the new evil i don't know if u guys noticed but if has something to do with bugs cocroaches.
they appear in different inportant scenens of the series like the beginning when mohinder goes into his fathers place, when the cop and the other are in prison and at the finall episode of season 1... please do some research and let me know if u think i'm right.

hey
peter and nathan flew up together so the future doesnt work out bad like hiro told nathan and peter did it obv to not kill anyone else. they both had to do it to save the world
also if you look closely at the warriors in the end of the last episode you can see hiros fathers face behind one of the helmets!
as for peters scar in five years later i think maybe the kenzei sword could have done that to him or maybe another bad guy who knows
i thought it was an awesome ending and am looking foward to the new season!
although my only quandry was actually in five years later when i first saw the new faces and situations they were in i laughed and thought it didnt piece together well at all!

EVERYONE Sylar isnt dead. I know this because my friend works with the Heroes crew.

Did none of you pay attention to the blood shape of sylar its man cross wolf have a look freeze the clip it doesnt even look like accident it looks planned as quite clearly his leg and shoe and then wolf head and wolf legs then the cockroach that looks injured crawling over the drain cover, I dont think anyone did drag him i think he dragged himself just watch the clip again

70. This might be repeating a question that others have asked but why didn't peter fly away at the end instead of relying on Nathan to do it and in doing so kill himself?

To answer this question and I am not positive just a hunch, but when peter was about to go nuclear it was against his will and he was trying to fight it. Because he couldnt control it maybe he couldnt control any of his powers at that time because he was overwhelmed. another posibility is maybe he can only use one power at a time and since he was using the nuke power he couldnt fly. (this second one may not be right though because i am sure that he has used more than one power at a time during the show, i just cant think of a time of the top of my head).

Hey 2 all tha heroes fans out der!!..i reely wish dat parkman doesnt die or peter and nathan 2..and wat will happen 2 molly as well....season 2 better be good!!

This might be repeating a question that others have asked but why didn't peter fly away at the end instead of relying on Nathan to do it and in doing so kill himself?