Referenced in Dragon Ball Online, he is the overseer of time's flow and ensures that nothing upsets it. When Trunks travelled through time, he caused a paradox that forced a new time dimension to split away. His Time Passport was taken by the demon Miira, who used it to travel through time in pursuit of Son Gokus DNA. He recruited Trunks to act as a counter-measure and stop Miira, by pursuing him through the cracks in time.
The Lord of Time is very worried, because every time a new timeline is made the temporal capacity of the universe grows smaller. If it becomes too filled with parallel dimensions, the universe will cease to be entirely
- www.dbocom.com untranslated 'lore' text, translated from Korean by Younghyun-Na and myself.