Title: Arcathias
Content:  Arcathias was a Pontic prince of Persian and Greek Macedonian ancestry, and figure in the First Mithridatic War. Arcathias was a son of Mithridates VI of Pontus and his sister-wife Laodice. In 89 BC, Arcathias joined Neoptolemus and Archelaus, his father's generals, with 10,000 horses, which he brought from Armenia, at the commencement of the war with the Romans. Arcathias took an active part in the great battle fought near the river Amneius or Amnias in Paphlagonia (the modern Gök River), in which Nicomedes IV of Bithynia was defeated. Two years afterwards, in 87 BC, he invaded Macedonia with a separate army alongside a general named Taxilas. There they either annihilated the legions of Sentius or successfully ejected them from Macedonia. By 86 BC, he had completely conquered Macedonia. He then proceeded to march against Sulla, but died on the way, at Tidaeum (or Potidaea or Mount Tisaion). The commander of the army sent to Macedonia is called "Ariarathes" by Plutarch, but it's generally assumed that this is the same person.
Title: Archedius
Content:  In Greek mythology, Archedius (Ancient Greek: Ἀρχήδιον) was an Arcadian prince as son of King Tegeates of Tegea and Maera, daughter of the Titan Atlas. He was the brother of Scephrus, Leimon, Gortys, and Cydon. Together with the last two brothers, they migrated to Crete on their own free will and that after them were named the cities Cydonia, Gortyna and Catreus.
Title: Archagathus (son of Agathocles of Syracuse)
Content:  Archagathus (fl. 4th century BC, died 307 BC) was a Syracusan Greek Prince. Archagathus was a son of Agathocles of Syracuse and had a brother named Heracleides. His father was the Greek tyrant of Syracuse who later became King of Sicily. His mother was the widow of his father’s late patron, Damas. He accompanied his father in an expedition to Carthage in 310 BC. Archagathus narrowly escaped being put to death in a tumult of soldiers, an event precipitated by him having murdered a man named Lyciscus, who reproached him in committing incest with his step-mother Alcia, the mother of his paternal half-sister, Lanassa. When his father was summoned from Carthage to return to state affairs in Sicily, Archagathus was left by his father to be in command of their army. Initially, Archagathus had several successful military victories. Later, he and his army were defeated three times and were obliged to take refuge in Tunis. His father returned to assist him but the mutiny of the Syracusan soldiers forced Agathocles to leave Carthage. Archagathus was murdered by soldiers of Syracuse in their revenge. He had a son, also named Archagathus by Theoxena, his third wife.
Title: Archagathus of Libya
Content:  Archagathus was a man of Sicilian origin and his name was a well-attested local Greek name in Sicily. He was the son born to Agathocles and his third wife Theoxena and had a sister called Theoxena. His father Agathocles was a Greek Tyrant of Syracuse who later became King of Sicily. Archagathus had two paternal-half posthumous brothers: Archagathus and Agathocles; one paternal half-sister Lanassa who was the second wife of King Pyrrhus of Epirus and a posthumous paternal half-nephew Archagathus. He was the namesake of his posthumous brother, nephew and possibly his paternal grandfather. His mother Theoxena was a Greek Macedonian noblewoman. 
Title: Aratius
Content:  Aratius was a native of Persian Armenia. He was a brother of Isaacius (Isaac) and Narses. His brother should not be confused with the famous general Narses the Eunuch. Choricius of Gaza describes Aratius as originating from a good family and having distinguished brothers. He does not identify this family. Modern historians suggest that they could be part of the Kamsarakan family, also ancestral to Narses.
Title: Arcesius
Content:  According to scholia on the Odyssey, Arcesius' parents were Zeus and Euryodeia; Ovid also writes of Arcesius as a son of Zeus. Other sources make him a son of Cephalus. Aristotle in his lost work The State of the Ithacians cited a myth according to which Cephalus was instructed by an oracle to mate with the first female being he should encounter if he wanted to have offspring; Cephalus mated with a she-bear, who then transformed into a human woman and bore him a son, Arcesius. Hyginus makes Arcesius a son of Cephalus and Procris, while Eustathius and the exegetical scholia to the Iliad report a version according to which Arcesius was a grandson of Cephalus through Cillus or Celeus. Zeus made Arcesius' line one of "only sons": his only son was Laertes, whose only son was Odysseus, whose only son was Telemachus. Arcesius's wife (and thus mother of Laertes) was Chalcomedusa, whose origins are not mentioned further, but whose very name, chalcos ("copper") and medousa ("guardian" or "protectress"), identifies her as the protector of Bronze Age metal-working technology.
Title: Arcesius
Content:  In Greek Mythology, Arcesius (also spelled Arceisius or Arkeisios; ) was the son of either Zeus or Cephalus, and king in Ithaca.
Title: Aristas
Content:  In Greek mythology, Aristas (Ancient Greek: Διομένειαν) was an Arcadian king as the son of Parthaon, descendant of King Lycaon of Arcadia. He was the father of Erymanthus, ancestor of Psophis.
Title: Parrhasius (Greek myth)
Content: Parrhasius or Parrhasus, an Arcadian prince as one of the 50 sons of the impious King Lycaon either by the naiad Cyllene, Nonacris or by unknown woman. In some accounts, his father was Zeus. Parrhasius was also called the father of Arcas who had the region named after him. He was a hero and founder of the Arcadian city of Parrhasia. ; Parrhasius, twin brother of Lycastus and son of Ares and Phylonome, daughter of Nyctimus and Arcadia. Their mother them into the river Erymanthus but they survived when a wolf suckled them and a shepherd, Gyliphus, reared them. Parrhasius succeeded later to the throne of Arcadia. Parrhasius was, in Greek mythology, the name of two individuals: 
Title: Archelaus of Cilicia
Content:  Archelaus was named after the first Archelaus (his paternal great-great-grandfather), who was a general of King Mithridates VI of Pontus. He was the son and heir of the Roman Client King Archelaus of Cappadocia from his first marriage to a princess from Armenia and his sister was the Cappadocian princess Glaphyra. There is a possibility that his parents may have been distantly related. His father was descended from Mithridates VI. His mother may have been a daughter of King Artavasdes II of Armenia of the Artaxiad Dynasty. The father of Artavasdes II was Tigranes the Great, who married Cleopatra of Pontus, a daughter of Mithridates VI from his first wife, his sister, Laodice. Thus Artavasdes II was a maternal grandson to Mithridates VI and Laodice. Archelaus was the maternal uncle of Glaphyra's children: Tigranes, Alexander and her unnamed daughter.

Question: Who is the father of Arcathius?
Answer: Mithridates VI of Pontus.
Mithridates.
Mithradates VI Eupator.
Mithradatēs ho Megas.
Mithridates Philopator Philadelphus.
Mithridates the Great.
Mithradates VI Eupator Dionysus.
Mithradates.