Tithus

Tithus is the God of Giants and one of the Original Twelve. Tithus created the giants (including the scholar caste that became the barakas). Tithus acted as a peace-maker, but failed in his efforts. Thulsa led a group of rebellious gods into battle against Tithus, and killed the God. Tithus' death exacerbated the Divine War.

Lore from Taiwanese version of TERA is different and unflattering about Tithus. This lore tells that Tithus made all the efforts to make the Giants the rulers of the World. He gave them knowledge of construction and magic and helped them to create an Empire.

Also Tithus lured humans into stealing Gidd's spear with an excuse stop Sikander's mad rampage after the death of his love Isren. Leader of humans, Arn with his children stole Gidd's spear and loaned it to Tithus. Gidd was furious and expelled all the humans from the mountain they were living in. After that he faced Tithus, who refused to return the Spear. In the end Tithus killed Gidd with his own spear.

The Giants soon exceeded all the other races in power and began conquering the world in Tithus' name. After the Vampirs' fall Gluda saw it wisest to sue peace with Tithus. After the Giants crushed and enslaved the Amani, Amarun faced Tithus, but was killed in front of the other gods. And Tithus declared himself the new leader of the gods.

Thulsa, Akasha, Killian, and Lakan pledged their allegiance to Tithus. Gods who were close to Amarun; Saleron, Karas and Zuras were imprisoned or escaped. Lakan took the Devans under his protection and as part of Giants' Empire. The Elves submitted to the Giants. And the Giants became just as brutal and ruthless like their god.

The Day of Flame
Yurian created, with the help from Lok, a weapon that he used to destroy all the three major cities of Giants' Holy Empire in a one single day. This became known as the "Day of Flame". Shakan, Velik, Kaia, Zenobia, Bahaar, and Ishara joined Yurian in his campaign against Tithus. And they finally defeated Tithus. After that Balder became new leader of gods.

It's said that Tithus was not killed, but imprisoned somewhere.