She has a nice side but she's also fully capable of teleporting you into a volcano

 

Name: Merlin, Lady Merlin, Crimson Pig
Origin: Nanatsu no Taizai
Gender: Female
Classification: Human, Boar's Sin of Gluttony, Great mage of Britannia 
Age: Unknown
Powers and Abilities: Super strength, speed, durability, agility, stamina, is excellent in the field of magic, she has all sorts of abilities such as telekinesis, teleportation, clairvoyance, barriers, spambale mass BFRingillusions, immortality (type 1), time manipulation (she stopped time from affecting herself), shapeshifting, elemental manipulation (earth, fire, ice, light, water and wind: she can also fuse earth, fire, water, and wind into one dark destructive substance), portal creation, spatial manipulation, can amplify the magic power of her allies, can negate magic and items enchanted with it, she negated her apprentices elemental spell, negated the life magic animating Gowther, negated Gray Lord's's sensory removal on Howzer, and she broke a magic seal just by putting her hands on it, this seal was strong enough to keep the likes of Threader and Galan out, great at making potions and other magical items such as incantation balls which are portable sealed spells, can transfer her soul into her sacred treasure
Weaknesses: None notable 
Destructive Capacity: Small island level (possibly island level+) via powerscaling (destroyed one of Gray Lord's's masks and her heritage/magic ability drove fear into Fraudrin and Gray Lord)
Range: Several miles with barriers and location. Hundreds of miles with clairvoyance, portals, and teleportation.
Speed: Massively hypersonic+ (Mach 277) in  speed (via telekinesis), massively hypersonic+ (mach 1871) in reaction/casting speed 
Durability: Small Island level+ via powerscaling, city level with barriers (one of her barriers was capable of withstanding a hit from Albion I which is a golem with higher magical energy than Demon Hendricksen), island level+ with Perfect Cube (Galan was incapable of breaking it and was implied capable of withstanding Fraudrin's suicide attack)
Lifting Strength: At least superhuman+, higher with telekinesis
Striking Strength:
Unknown, she doesn't seem to be the physical type, but she should be at least superhuman+
Stamina: Superhuman
Standard Equipment: Her sacred treasure, Aldan which is a small sphere of energy, Cure Angel (a demonic caterpillar that is used for healing), Minimum tablets (pills that shrink the user), Balor's Power Eye (the Eye grants the ability of viewing other character's fighting prowess in the form of numerical values which are split into 3 categories: Power, Strength and Spirit, It's similar to Dragon Ball's scouter)
Intelligence: Skilled fighter, world class mage and has extensive knowledge in the craft
Notable Attacks/Techniques:

Aldan: Merlin's sacred treasure. Aldan is a small sphere of energy that Merlin summon into the palm of her hand. With it, Merlin is capable of preforming amazing magical feats.

 - Absolute CancelBy placing her hands over a spell, Merlin is able to completely erase it from existence. However, if the magic is particularity powerful it may be difficult to erase completely, instead being temporarily suspend.

  • Magic Cancel: A technique that allows Merlin to cancel any magic that has been cast on an individual. It was shown to cancel the effects of one of her own magical items.

 

- Aqua Dress: A spell that creates clothes made of water. By refracting the light in the water, Merlin is able to hide the most "important" parts.

- Endless WhirlA spell with which Merlin creates a vortex of wind with an incredible destructive power, sucking their objectives towards its center.

- Exterminate Ray: A spell where Merlin fires a disintegration beam, incinerating everything in the line of fire.

- Fire Storm: A spell that allows Merlin to attack the opponent with a powerful blast of fire.

- Infinity: A unique and incredibly powerful ability that allows her to keep her spells active until she herself chooses to dispel them. No matter how powerful the spell, Merlin only needs to cast it once for her power to take effect. It is extremely versatile and can be used in numerous ways to make her spells everlasting, including freezing ice eternally, causing flames to burn endlessly, or even stopping her own time for eternity. It allowed her to escape the effects of powers which alter her time or her age, such as Grayroad's commandment.

LocationA power that allows Merlin to locate any item or person. She can extend its reach to cover an area of approximately the size of a city.

- Power AmplifyA spell that allows Merlin to amplify the magic of her allies, making their techniques considerably more powerful.

- Perfect CubeA spell that denies entry to anyone but the caster. Originating from the demon world; the spell surrounds a specified area and reflects all attacks, whether strong or weak, back at the opponent.

 

Merlin locking Arthur and Elizabeth in Perfect Cub

 

- TeleportationHigh-level teleportation magic that allows Merlin to appear and disappear at precise locations and teleport groups of people instantaneously. The spell effect radius of Merlin's teleportation is several miles wide.

  • Object TeleportationA subsidiary teleportation technique that allows Merlin to summon various objects, such as clothes and weapons, to herself and her allies.

 - Wave Dragon: A spell that allows Merlin to call many dragons made of water.


Notable OBD Victories:

Orochimaru (Naruto) - Orochimaru Profile
- Zeref (Fairy Tail) - Zeref Profile (outdated, Zeref wins now)

Notable OBD Losses:

Notable OBD draws/inconclusive matches:

- Lina Inverse (Slayers) - Lina Inverse Profile (should be noted that Lina was limited to her Boost spell incantation)

Other: Not to be confused with any other similarly - named characters or the historical person she is named after such as Merlyn from Marvel Comics.