Most of my Tales of the Ba’tala lore is in my deviantart page, so rather than regurgitate information most of you (my Tumblr watchers) don't understand, I'll slowly ease you with lore notes here and there on this blog. Until then, I recommend you check out the Tales of the Ba'tala deviantart for additional stuff.
Rudi here is an inventor and tinkerer with the ability to control water, but unlike other men of his race, due to very underdeveloped wings, he is not able to fly. However, to protect him from bullying and discrimination, Rudi was sheltered and hidden from the world by his wealthy parents, where he was urged to study and learn how to earn his place in society before he's released. As he was something of a genius in addition to possessing the gift of Water, Rudi was able to skyrocket into fame and prestige even flighted men couldn't possess. This made Rudi a cocky and self-entitled hedonist who rode on his fame and "specialness", all while invoking the ire of his brother, Randi, an ordinary soldier, who worked twice--if not three times--as hard as Rudi but not gain even an ounce of recognition.