Patricide

Patricide is the act of killing one's own father, or a person who kills their own father or stepfather. The word patricide derives from the Greek word pater (father) and the Latin suffix -cida (cutter or killer). Patricide is a sub-form of parricide, which is defined as an act of killing a close relative. In many cultures and religions patricide was considered one of the worst sins. For example, according to Marcus Tullius Cicero, in the Roman Republic it was the only crime for which the civilian could be sentenced to death.

Patricide in myths and Religion
Patricide is a common motif that is prevalent throughout many religions and cultures, and particularly in the mythology and religion of Greek culture. Some key examples of patricide from various cultures are included as follows:

Apsu, in the Babylonian creation epic the Enûma Elish, was killed by his son Ea in the struggle for supremacy among the gods.

In the mythology of the neighboring Mesopotamian Hurrian people the storm god Teshub kills his father Kumarbi, sometimes jointly with his grandfather Anu in reciprocity for an attempted patricide by Kumarbi.

In the Greek creation epic, first recorded in Hesiod's Theogony, Cronus was jealous of his father Uranus' power as ruler of the universe. Cronus thus killed or castrated his father. Cronus, in turn, was overthrown by his own son, Zeus.

Oedipus was fated to kill his father, a king, and marry his mother. His parents attempted to prevent this by leaving him on the side of a mountain as an infant. He was found and raised by a shepherd. Once grown, Oedipus meets his father while his father is traveling, but not knowing who he is, ends up killing him. He then unknowingly marries his mother to become king, ultimately fulfilling the prophecy.

Pelias was killed by his daughters, who were deceived by Medea into thinking he could be resurrected.

In the Hindu epic Mahabharata, Babruvahana killed his father Arjun, but Arjun was brought back to life by his wife, the snake goddess Uloopi.

In Chinese belief, people who commit patricide (or matricide) will be killed by a lightning strike as a punishment from filial and warrior deity Erlang Shen.

In Norse mythology, Fafnir murdered his father Hreidmar to gain the cursed golden ring of Andvari that he had obtained. Some versions say that his brother Regin helped him.

Examples of Patricide in Mahou Kaiju series
Ryuuji Kuroi kills his father, Darius who is weakened after a battle in Tatsura vs Hellbourne.