Wolfram von Bielefelt

Canonical Abilities

Fire Manipulation:

Wolfram is a user of Maryoku and Majutsu.
Majutsu is stronger abilities used mainly when battling or for "important things".

Healing Abilities:

Wolfram's secondary seeming "ability".
In the Novels, Wolfram can heal people by raising the intensity of Wolfram's natural voice, causing almost instant healing effect (implied as) to the best degrees possible, and heals Hube (Gwendal's relative) this way.
In the manga, Wolfram visually grasps Hube's hand while doing this, which seems to amplify the strength of the healing.
Manga!Wolfram "modestly" describes it as,
"Well, I'm no expert like Gisela, but I have a little experience with it."

from KKM Glossary fan translation:

Majutsu (魔術)
It's mainly used for important things like fighting or {in Yuuri's case specifically} summoning the Maou.
In accordance with the war pact they have with the humans, they seem to control how much they use it.
In places where there are fewer elements that obey the Mazoku, (Like human territories),
its effect is weaker. (Novel 1)

Maryoku - Magic - Demon power (魔力)
Power that the Mazoku {"Demons"} possess (those who are half humans do not {typically} possess it). The strength of such power is determined by the quality of the soul they're born with.
They can use elements like Wind, Earth, Fire, and Water, by making pacts with them. (Novel 1)

Mazoku (魔族)
① (In the other world) {Shin Makoku}: Beings that can use majutsu and live very long lives. They're enemies of the humans. Their hair, skin and even their shape, varies greatly among them, but if one of them is born with black {hair/eyes} in their bodies, it means that they have the special soul of a king or someone close to them. (Novel 1)
* Lately, Yuuri Shibuya, the Maou, has been trying to "bridge the gap" between humans and demons, trying to help form alliances with groups willing to cooperate and Shin Makoku.
Caloria, whose current leader is Flynn Gilbit, has joined this alliance.

{Examples}: Wolfram and Gwendal, Wolfram's eldest brother, are full Mazoku / full-blooded Demons.
Conrad Weller, Wolfram's 2nd eldest brother, cannot use Maryoku as Conrad is a half-Mazoku / half-blood.
Yuuri Shibuya, also "half"-human in comparison, is able to use Maryoku/Majutsu because Yuuri has naturally black hair and black eyes, and can become the Maou.
Yuuri's soul in a former life belonged to Julia von Wincott, a full Mazoku, in comparison.
Greta, Yuuri and Wolfram's adopted child, cannot use Maryoku/Majutsu due to being full human {despite being born in the "other world"} and has a bit of a complex in some Novels material and side stories over this.
Ken Murata, who lives in Yuuri's modern-day Japan, remembers Murata's past lives as a Mazoku, but seems to avoid/can't use Maryoku/Majutsu despite also having black hair and black eyes.
Instead of fighting, Murata acts as the strategist of sorts or an advisor to Yuuri.

② (On Earth) {Yuuri's Reality/Modern-day Japan}: Their looks and skills are similar to those of humans.
They live a little longer than humans, and it's said that there are many who excel at something. (Gaiden {Side Story Novel} #1)

{Example}: Bob, the "Demon King" / Maou of Earth, who works at a certain Earth job.
Shouri Shibuya, Yuuri's older brother, later trains under Bob in the anime, but also met Bob when Shouri was very young in both anime and novels.
In the Novels, however, Shouri hasn't reunited with Bob yet, but they do contact Bob on the phone when Murata needs to call.
In the anime, Bob could (almost scaringly) hold his own against the Maou, but also couldn't surpass the Maou, bringing the fight to a standstill as both sides were equal, but the Maou {Yuuri} clearly had more endurance.
Shouri was raised similar to Yuuri in the Novels, but like Yuuri, also was born with natural black hair and eyes. Shouri, unlike Yuuri, had some awareness of Mazoku due to meeting Bob and retaining those memories as they grew older, but like Yuuri, doesn't seem to know as much about how to use Maryoku or even if Shouri can. In the side story where Shouri met Bob, which originated from the Novels and was adapted into the anime, Bob used powerful Maryoku/Majutsu in front of a younger Shouri, making Shouri aware of its strength. Yuuri was there, witnessing the same, but too young to remember it.

Majutsu Ability

Wolfram, using a specific incantation, can summon a creature, acting similarly to a familiar, that looks like a large lion made completely of blazing hot fire. It's implied to be extremely powerful with Wolfram's natural abilities alone, and Wolfram can win most "average" fights using this.

It's also implied to act similar to how a real lion would "act", but it cannot speak human words.

Wolfram typically opts to fight using natural fire abilities, however, rarely summoning the lion unless in dire need.
If a Mazoku overspends their Maryoku/abilities too much, they can die {see: Julia}, and Wolfram knows this.

Seasonal Powers

During October / After Arrival

{Basic Skills} for Summer power holders:

● Fire manipulation (Manipulate existing fire. The ability lets the user control the shape and direction of the fire as well as put it out with enough practice. Able to lift fire in the air and hold it there.)
* Wolfram was already able to do this / the highlighted sections canonically pre-Seasons.

● Fire creation (User creates their own fire and has complete control over what it does, including automatically be able to just put it out. Able to levitate fire in the air.)
* Wolfram was already able to do this / the highlighted sections canonically pre-Seasons.

● Make fire harmless (changes color) (The color of the fire depends on the user (chosen by the player). It's always the same color depending on the person. Two people can have the same color. User cannot manipulate the fire through the ability, but fire manipulation can be used at the same time.)
* When the color changes, it turns into a sort of dull cyan blue.
It looks bright when light hits it but darker in darkness and shadows.

● Make fire into weapons (Make fire look like a weapon and hold it without getting burned. When monsters/others touch the weapons they burn. If a character doesn't think about a weapon, the ability selects a fitting weapon for the character (player choice).)
* Wolfram was already able to do this / the highlighted sections canonically pre-Seasons.
* Wolfram however didn't tend to use specific weapons, but there is a sequence in the anime where Wolfram holds a spark of fire on the fingertip that expands as Wolfram lets the ability loose, that Wolfram can "hold" in place during the duration of the attack.
* What form the weapon takes is To Be Determined {something like a long trident shape made of fire, maybe??}
** If I went with that, it'd be long enough that Wolfram can make stabbing attacks with it from a certain range, within reason.

December

{Elemental} Advanced Skill #1 -

● Temperature control: hot (Controls the temperature around the user, making it feel either less or more warm. The temperature can't go under +5 celcius/41 degrees Fahrenheit. Also helps regulate the user's own body temperature, making them able to withstand warm atmosphere better or making them warmer in the colder climates. May make the user feel hot to touch.)
* Wolfram was already possibly able to do {some of} this / the highlighted sections canonically pre-Seasons.
* It's assumed Wolfram's generally skilled at handling fire enough to keep self safe from most severe uses of it.

February

{Elemental} Advanced Skill #2 -

● Walk through fire (The ability to walk through any fire unharmed. Makes the user also immune to fire attacks and burn effects. Ability lasts for up to 5 hours per use.)
* Wolfram was already possibly able to do {some of} this / the highlighted sections canonically pre-Seasons.
* If Wolfram is able to do this, it hasn't been made explicit in the text yet.
* There are some sequences where Wolfram will mysteriously "turn up" regardless of circumstance anywhere a certain other character seems to "pilot" Wolfram (when mind manipulated).
* It's highly possible the other character could make Wolfram "walk through fire".
* If the ability did exist, it now functions like this.

April

{Elemental} Advanced Skill #3

● Fire breathe (The ability to breathe fire like air. The user doesn't burn their mouth or throat by doing so, but it might leave their mouth unnaturally hot for a while.)
* Wolfram hasn't tried yet, but it'll likely come into play eventually.

June

{Elemental} Advanced Skill #4

● Lava (The ability to both create and manipulate lava. Does not protect the user from the effects of lava if they get it on themselves.)
* Wolfram hasn't tried yet, but it'll likely come into play eventually.

October? {To Be Determined}:

{Highly Advanced} Skill {Summer}:

● Complete shapeshifting (The ability to completely change the way the user looks.
This ability even includes changing their gender.
The change can be permanent or can be easily reverted back to their old self.)
* Wolfram has crossdressed canonically before as it is, so this... won't be too much of a change.