Father/Benedict Uno

In Operation: Z.E.R.O., Father (as young Benedict Uno) was very cowardly and obedient, scared of his father, Grandfather, refusing to disobey his orders out of fear. Following his footsteps, Benedict became Father wearing a silhouette suit and hating all children, going as far to delightfulize the members of Sector Z into the Delightful Children From Down The Lane.

Next to Grandfather, he is the cruelest of all the villains throughout the series, making more attempts to destroy or take over the Kids Next Door Organization than any other character. As a result, they considered him the greatest enemy they've ever faced until the return of Grandfather. He even once tried to cook children into the Delightful Children's Birthday cake, which would have resulted in both mass murder and cannibalism.

However, he's shown to have a humorous side as shown in many episodes such as Operation: A.W.A.R.D.S. and Operation: C.A.K.E.D.-F.I.V.E. but is still ill-tempered and impatient, bursting into flames when angered. He's also rather sarcastic as shown in Operation: T.R.A.I.N.I.N.G. and in Operation: I.T.

He has also shown to still be fairly sensitive, as in Operation: C.A.K.E.D.-F.I.V.E. in which no one invited him to a "party" down at cell block, so he says, "What, no one invites me? I may be evil, but I still like to party down once in a while..."

In Operation: Z.E.R.O. it's shown he's the victim of parental favoritism, being rejected and publicly humiliated by Grandfather. Later Father expresses jealousy towards his older brother, who Grandfather outright says is his favorite son. He still seeks approval from Grandfather, to no avail.

ABILITIES

Pyrokinesis Father using his powers. Father using his powers.

Pyrokinesis is the most used ability that Father has at his disposal.

It's possible that this ability is fueled by either anger or evil as Father's powers can increase whenever he became angry.

Father can summon fire around him in multiple episodes. He is able to utilize that fire as he pleased, including the following:

Extinguishing 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.

Fireballs Father is shown to have the ability to throw fireballs (Operation: G.R.A.D.U.A.T.E.S. and other multiple episodes).

Fire Invulnerability (Situational) Interestingly, Father is capable of using his fire without burning himself. He is also capable of preventing his fire from burning others. However in special cases his own fire is able to be used against him (Operation: C.A.K.E.D.-F.O.U.R.).

Fire Sculpting Father is able to create shapes, such as cages and fists, out of fire.

Flamethrower Father is able to focus his flames into a beam, much like a powerful flamethrower. It is capable of slowly melting through metal.

NON FIRE RELATED ABILITIES

Mechanical Genius Father is a skilled engineer and inventor, who created the Delightfulization Chamber, the Really Really Incredibly Destructive Machine and Knightamatons. He also designed his mansion as a highly-defended fortress.

Business As the head of Evil Adult Industries Inc, Father showed great business skills.

Persuasion Father is shown multiple times to be able to convince other villains (and even The KND themselves once) to side with him in his plans.

Acting In addition to his powers of persuasion, Father has a natural ability to lie convincingly while he keeps a completely straight face. He uses this 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.)

Baking Father is 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.

Weather Manipulation 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.

Weaknesses

Father is shown to be weak to cold (ice cream) and water, which can nulify his fire powers if enough force is applied. (Operation: G.R.O.W.-U.P. and Operation: T.R.A.I.N.I.N.G.)

Father also once surrendered and crumbled in fear after he was threatened to be force-fed Broccoli by Numbuh 362. (Operation: I.T.)