Well, everybody in my cast probably gets splattered since they don't really have any superpowers.
Except for Zane.
Zane's superpower is "Commence orbital bombardment".
Kinda depends really. Andrew isn't a physical fighter in his natural state, while Dan seems to be rather physically proficient. So I imagine Andrew trying to keep Dan at bay with flames while Dan would try and close the gap.
Andrew does have his partial overlord form in canon at the moment, which (if given opportunity) boost his physical proficiency (allowing him to use a single hand to block a giant seaserpent), which might very well put him on par with Dan, while keeping his former flame abilities. Which makes Andrew harder to combat at both medium range and close range at that point.
It depends on whether Dan can manage to close the gap between him and Andrew and finish him off before the latter manages to use his Overlord powers and transform.
Well, I see your character's behaviours and powers, and I can say that, in the actual time that I'm posting this message, there are a few characters in my cast that can be challenging for him if they really want to, some even can defeat him.
Let's start with Feith and Agnou
They're both magic users and each one has his own personal advantages, Feith can copy the knowledge and experience from others while Agnou can enhance the damage from his spells, with the right mindset each one of them can easily defeat him.
Then, we have Noone
He copies the powers of anyone around him, so the fight would be toe on toe, but he still a kid, so his mindset may be a problem at this moment.
The worse that you can do is fight against Irokah
If he wants to win, better to ignore this kid, he may be inexperienced, but his powers are extremely dangerous, so better to avoid any fight with him, he can't hurt your character if your character doesn't do anything against him, but if he hurts him, well, it may be the end of the world, or even the universe.
Now, Imelly
Your character may be fast, but she can teleport, levitate and manipulate crystals as shield and weapons, a fight against her won't be easy at all.
And as a character who can be match and even overpower him, is Rohe

Her powers allow her to alter biological structures, so she can heal herself or alter your character in any way or form, she may crush him like paper, she can weak his bones, she can even confuse him manipulating his emotions, she can do anything and keeping distance is not an option because she can stretch herself to reach your character even by surprise, All of this and more, if she is in killing mode.
And as Bonus, a Bioversal, the Reather

These creatures are extremely dangerous for the 90% of living beings on the planet, they can survive almost any attack no matter how hard the impact is, they can turn themself in any element to counter the enemy's powers, they can become intangible, they can turn their tentacles in drills, they can shoot lasers, predict teleporters next locations and speedsters routes and even eat souls if they realize their enemy is very resistant, they act quickly, once they discover what enemy's powers are, the battle is decided.
Interesting question. Dan seems like a very troubled individual. Luckily so are our main characters.
Isabel would probably first lecture Dan and then wildly attack with no plan, probably with an improvised weapon.
Devan would execute him efficiently and without mercy.
Renee would sit Dan down and inflict a round of uncomfortably intense counselling on him (which would probably have no effect and then she would hit him with a frying pan).
Since we have 3 main characters and Dan is on his own, I think they would team up and burn him with fire, and probably win.
Killing the Undead Web Comic1
Well at where my story is at my mc would definitely lose the fight but say if my story had already been a bit far ahead I'd say my OC stands a chance of winning by an advantage of speed and with a technique I can't really mention right now cause it would be a spoiler
Check out Sengoku Jidai:UNTOLD on Tapas
Dan is good but @DiegoPalacios OC Rocky the Rock may be strongest OC on Tapas if we're being honest
@kinleypavone I really enjoy your tenacity series and I'm curious on how your characters would interact with dan in a fight.
I have three main/point of view characters in the story:
Desquicio is basically an emotions junkie even if it's detrimental for himself. He can alter other people's emotions, remember and store them in what he calls his collection of emotions. Considering how Dan is the story, Desquicio would exacerbate Dan's hate and anger to the extreme, potentially causing the extinction of all life on the planet and this would be totally worth it from Desquicio's perspective.
The Madman would play with Dan's mind and trap him in a series of illusions where he can't escape. The only downside is that at this point in the story my character is crazy and very scatterbrained, so chances are after playing with Dan for some time he would forget about him or just be too tired to continue, and if Dan is still sane enough he could go after my idiot xD
Claudia at this point in the story has no chance; in the future maybe, but not yet :')
It would be fun to set up a bracket challenge in between the community's protagonists. But for what it's worth, here's my dude, my right hand, ride or die - KNIGHTSTAR... 6ft weighing a buck 50 at 17 years of age.. His powers are unknown at the moment because he's still in discovery mode, but he has powerful potential!!!
-kingkotheartiz
i will assume your character is like gauro from one punch man or baki, highly skilled fighter with superhuman powers
i think in base form each of my main heroes(the knights) would have a difficult time with him but i don't see him walking away the winner in any, and no chance if any of them go into knight form
each knight has 3 power bases usually 1 elemental power a secondary elemental or other power that is somewhat opposite and a third power they have unlike either of the previous 2
here is shadow fang aka the hellfire knight he is( in base form) 7 ft tall weighs in at 374 lbs thanks to being a chimeran he has heightened senses ,stronger and faster then a human he is a master at tae qwon do and karate, has pyrokinetic, umbrakinetic, and a supercharge ability that allows him to double his power for a short time, shadow fang would hold himself back because he would not want to kill anyone, but will kill if it was nessacary , as for strategy shadow fang here is going to tryend the fight quickly and disable your guy by trying to knock him out or break bones, and i would think shadow fang would win