Scaling of power is fine. With "a city leveling dragon" being the very top of power you could hope to reach. 
The reaper should be around, certainly, but said reaper shouldn't steal the spotlight. Hence, he can be used for supplies, directions,... 

[hider=3 is for Edward, certainly!]

Edward multi-rolling as DPS & Tank is not 'fine'.

In case this strikes you as unappropriately rude to say, let me further examplify what I'm refering to by comparing all characters using:
- Analyses. 
- (First impressions/thoughts that come to mind)


Ravadons abilities are 2-handedness, A singing sword that can coat itself in tree or something (Currently MIA, replaced by Gladius) and being sexy around fruits and veggies.(some usefull some silly)
Ravadons weaknessess include pride, seeking false honor, bad vision in his left eye, sleepy temper and overconfidence. 
(some annoying and some silly)

Isabella's abilities are an earthen sword that listens only to her that can split any ground, knowing every crevice in Dragan and has some connections via her royal birth-right. (Pretty weak when on sand, pretty OP when on top of a tower)
Isabella's weaknessess include stubborness with frustration over failure & coldheartedness. (The former can be fatal, the later can be lived with) 

Kiera has got healing powers, daggers and some poisons. (advanced healing: Limbs get re-attached, blind can see again!, poisons that could stop a heart by chance?)
Kiera's weaknesses include Naive, absent-minded, spiteful, vain and selfish. (And so, only HER limbs shall get attached again!)

Sykes abilities include ancient system access key, learning new languages, learning new info, can use guns, bows and knifes, tracks things, being fit, can be stealthy, gets access to "google maps" from eagles eye view. (woohoo, high tech/ancient tech and plot advancements!)
Sykes weaknesses are being cynical, jaded, detachment from events at large, Considering all races that aren't human his servants, grief and emotional strain. (the troubled reality-detached "Purist?" engineer that can get reckless if you find his triggers... no springs attached.) 

Grace is a greatsword swinger, that is currently multi-classing as level 1 mage, can tell when someone is lying, but not pin it down specifically. All in all strong, but struggling without real weaponry and armour. (As if she's trying to make up for multi-classing)
Grace's weaknesses include being brainwashed into serving her church, doubting her upbringing and loyalties, can't smuggle weapons when she's disguised and being self-depricating. 

And then, there's Edward. (Whose Bio I'm reading off of page 10 in the OOC in stead of from the character tab, by the way.) 

The armorless person that needs no armor because he has scales.
The weaponless person that needs no weapons due to his claws. Unless it is convenient for him to use weapons or shielding.
He has a strange fighting style. (<= though any person could ask themselves what that actually means.)
He can use Ice magic and basically "the light side of The Force". 
(Seems to indicate to me that he means to fight a "unique" mixture of drunken style kung-fu that is also going to be used to throw enemies off guard and then hit them with and icey magic ray that freezes them before "overwhelming dragon might force push" destroys them all instantly.)

Edwards flaws:
He doesn't know what's going on, bad attitude, lazy and thus doesn't show his strength unless on the battlefield, walks into the enemies camp and asks them what's for dinner. 
EDIT: He can't undo his monster-dragon-state and has a thing that can happen when it does/could.
(
A. At this point in the story and probably also from hereon, hardly anyone knows, so how is this a flaw?
B. Can be defined better than "Bad attitude". What's bad about it? Is he sassy all the time? Doesn't he eat with his mouth closed?
C. Lazyness towards fighting unless the battlefield is nearby doesn't sound like a real characterflaw. There's plenty of others that don't seem active unless they are on a battlefield. Generally, these are patrolling guards. 
D. Its an obvious move, sounds like it's dumb and could get him into trouble. But, i find it hard to refer to this as being his "flaw"
) 

The reason these questions(A-D) come up is the following:

It sounds (to me) like Edwards weakness is only there to "accentuate" his strength with extra bonuses. 
A) Nullified weakness and general truth
B) Undefined and thus exploitable
C) General truth about people
D) Accentuation of strength, despite being a means by which he could get killed


Now, I'm not saying you're a bad writer. I'm not saying I envy you or your character. I'm not saying that you were being unfair, pulling fanfiction out of a hat or anything like that. 


What I am saying right now, is that if I take your character and pit him up against any of the others, be it one or either, be they completely nude, equiped with one weapon or completely geared up, I don't see any way or means by which they could ever end in anything close to a stalemate with Edward. Let alone ever come out on top of the guy.
I think we can both agree that such a thing is OP when compared to the rest of the party. And in this case, the fantasy world. 

Now, an OP character wouldn't pose that big of a problem, if it weren't the idea that he was the fantasy equivalent of superman in a party of "pretty commoners".
I use this comparison to hint at why your character shouldn't be playing DPS and tank at the same time:

What's left for the rest of the party to do? Serve and tend to the OP heroes needs of the story? Unlocking new ways for the hero to smite the enemies he faces?... For me, this question seems harder to answer.

DPS + Tank (Which according to your charactersheet can also do Magic Per Second & monk fist) are the most important roles/the only needed in a world of fantasy, if powerful enough. 

Speaking of the power...
Why can Edward reach the ceiling of power? 
Example:
=> Talking back loudly to the great dragon that levels cities with a morning stroll and challenging him to a fight convinced he will win.
Problem:
=> Ravadon, (who is the specified proud/vain trillalla-talks too much incarnate,) gets humbled and tries to skip one of such powerlevels. 

It shows unspoken fearlessness(as in, the only way to find out about it is trying to read in between the lines of your charactersheet). 
It shows disconnect from the world (as in, either your character has to be oblivious to the fact that he could be destroyed instantly which should have been added to your charactersheet or he's such an Apex Predator that human life is beneath him because he could end it all in an OP fashion of literal mass consumption).

I have a hard time picturing where the progression is in your character? Does he stop walking into enemy camps? Does he get OP beyond siege weaponry?

The reason for that is that Edward really hasn't tanked anything. Being swung at with a sword seemed not to have the least effect on him, how much less should we expect from a spear? an axe? a mace? The entire royal army for that matter?


Edwards "OP levels of awesome" can steal away spotlight moments, will seems out of place when compared to the rest of the cast, will get even more stronger and requires all the seven dragonballs to be gathered as the 24 moons align in order for him to be vulnerable again. 
Also, he can eat all he want and never grow fat. 

I can tell by the way you write about him and his actions that you like him and I don't want to take your character away from you. But as a good writers saying goes: "Kill your darlings"

I can't help but fear for his future and personal tolerance for the way he is handled.

Needles to say, you needeth change anything yet if you don't feel like it. I would just suggest you to take this into consideration the next time Edward gets a chance to shine in his strengths or is challenged in his weakness. 

[/hider]

We can all have reason to see the salamander again several times. We could even make our quest about finding him. 
"Excuse me, sir. We brought a clerk and are looking for a Big Red dragon that can destroy cities and randomly knows peoples names and marks their hands with a mark just like this. ... No, we don't know what's in your pit of doom but we could take a look for some gold and a bed to sleep in?"

"Excuse me, sir. We are looking for an ancient dragon that might know of old technological burial grounds?"

"Excuse me, sir. We're lookin for a Dragon of about..... This..... big. I need to talk to him about his emotions. Have you seen him? ... sir, no I'm not here to claim your soul. Sir, why are you running? ... sir... [i]*defeated sigh*[/i]"

To give some helpful insight, Ravadon has some questions: 
"Why mark me when I cower away from the honor/glory/pride of fighting?"
"Why put me through something hurtful like the mark?"
"Why attack a city and steal their pretty princess?"
"How did you know my name? I didn't even say it yet that loudly."
"Why do you seem to know Edward?"
"What's your side of the story in relation to the reaper as this is something I'm planning on asking the the reaper first."