Even if it's every 1000 years, that still means it happened 500 years in the past from our current timeline.
Here's a character sheet for the Ambassador me and Cavalier talked about.
Height: 6' 1"
Weight: 294 lbs
Species: Arcosian (Homeworlder)
Station: Ambassador for the Arcosian Empire
Grey Carapace with Ruby Red Shells. Resembling a taller verson of Frieza's first form but with no horns. He wears a clean white dress uniform.
Glib and manipulative. Rime has a large amount of pride in his abilities as a speaker and his immense power compared to non-Arcosians. He is furthermore calm, patient, and able to keep his cool even under extreme duress.
At some point, he was appointed an Ambassadorship from the Arcosian Empire and was sent to negotiate terms with the Tuffles of Plant.
Story So Far:
Is going to betray the Rebel Alliance to Lord Apfel
Little Martial Arts training
Ki Spear: Rime curls his hand into almost a fist. A beam of energy forms inside, extending outwards from both hands in a narrow and pointed javelin of energy that, when thrown like a javelin, can pierce targets, then detonate once so embedded to deal massive damage. Rime can throw these rapidly.
A Hundred Arrows: Rime extends both hands out from both his sides, creating dozens of miniature Ki Spears that fly towards its target. This is Rime's ultimate attack.
Rime possesses strong security clearance in the Arcosian Empire and is in good standing with many powerful creatures.