Puck was an artificial spirit, and one of the four great spirits.
Powers and Stats
Tier: At least 8-B, likely higher | At least Low 7-B
Classification: Artificial Spirit
Powers and Abilities: Superhuman Physical Characteristics, Fire Manipulation, Immortality (Type 1), Can read emotions, Flight, Water Manipulation, Ice Manipulation, Darkness Manipulation, Absolute Zero, Can freeze souls, Air Manipulation, Weather Manipulation, Telepathy (Can transmit his thoughts directly into another person's mind), Body Control (Can enlarge himself, and reset his body condition to how it was prior, for instance if he gets drunk he can reset himself back to before he was drunk)
Striking Strength: City Block Class | At least Small City Class
Durability: At least City Block level, likely higher | At least Small City level
Stamina: Very High (Fought Roswaal for an entire day and night)
Range: Several hundreds of meters | At least several hundreds of meters
Standard Equipment: None
Intelligence: Above Average
Weaknesses: When he was in a contract with Emilia he would only appear from nine in the morning to five in the afternoon.
Shamak: An ability which allows the user to trap their opponents in a area of darkness that confuses their senses. The targets become unable to sense where they are, however they can still feel the ground and sense what's happening to their body.
Absolute Zero: Puck can freeze things to absolute zero temperatures evident by multiple quotes saying he can and the targets quickly falling to pieces under their own weight, after being frozen. He was also able to release Emilia from being frozen at absolute zero by her own power for almost a 100 years, and only someone with equal power to Emilia could unfreeze her.
Fire Manipulation: Puck is actually a fire spirit, in his Beast of the End form just existing freezes everything around him as he needs an incredible amount of mana to stay in this form, he forcibly drains it from his surroundings, causing his surroundings to freeze at absolute zero. The longer Puck stays in his Beast of the End form, the more everything freezes and continues to spread until it eventually destroys the entire world.
Soul Freeze: Puck has the ability to freeze souls thereby resulting in death.
Key: Normal | Beast of the End