PyrokinesisPyrokinesis was the most used ability that Father possessed.
It's possible that this ability is fueled by either anger or evil as Father's powers increased whenever he became angry.
Father was shown the ability to summon fire around him in multiple episodes. He was able to utilize that fire as he pleased, including the following:
It did not require much effort for Father to extinguish any flames that he created, and his flames could go out as soon as he stopped needing them. That was important, as it prevented him from losing control of the flames that he created.
Father was shown to have the ability to throw fireballs (Operation: G.R.A.D.U.A.T.E.S. and other multiple episodes).
Interestingly, Father was capable of using his fire without burning himself. He was also capable of preventing his fire from burning others.
Father was able to create shapes, such as cages and fists, out of fire.
Father was able to focus his flames into a beam, much like a powerful flamethrower. It was capable of slowly melting through metal.
Father also possessed various powers that were unrelated to fire:
Father was able to create fake copies of himself, which turned to smoke when they were attacked. (Operation: I.T.)
Father was shown the ability to make a shadow suit while, and after, he was covered with flames. It was possible that was the only part of the ability set that was inherited, as it was the only one (other than Levitation) that Father and Grandfather had in common.
Father also possesses a variety of non-super-powered abilities:
Father was a skilled engineer and inventor, capable of building the Delightfulization Chamber, the Really Really Incredibly Destructive Machine, Knightamatons, He also designed his mansion as a highly-defended fortress.
As the head of Evil Adult Industries Inc, Father showed great business skills.
Father was shown multiple times to be able to convince other villains (and even The KND themselves once) to side with him in his plans.
In addition to his powers of persuasion, Father had a natural ability to lie convincingly while he kept a completely straight face. He used that to trick numerous people, from other villains to KND Operatives. (Operation: T.R.A.I.N.I.N.G., and Operation: I.N.T.E.R.V.I.E.W.S.)
Father was shown to be able to bake a variety of large, mouth-watering cakes that were the envy of children around the world; some of those cakes would be nearly impossible to bake by normal means.
SuPer Educated Guesses Unfortunately Lack Actual Surety However Is Included On Notes
In Operation: G.R.O.W.-U.P., when the Delightful Children From Down The Lane failed to defeat the KND, it began to rain, at which point, the Delightful Children concluded that Father "Is most unsatisfied" which implied that the rain was caused by Father as a way of expressing his disappointment.
Alternatively, it could have been just a classic element to set the mood of the scene.
It was possible that Father got his abilities either from Grandfather or from his Mother.
However, it would also fail to explain why Grandfather was not shown using fire abilities or shape-shifting abilities of any sort, as he was shown to be more evil than even Father.
- As a result of Father's wide array of powers, he is considered the most powerful villain in the series, and it's implied in Operation: Z.E.R.O that he actually could overpower Grandfather, despite being intimidated by the latter.