Haddo

In Genshin Impact, Haddo is an NPC who appears during the 3.8 version event "Secret Summer Paradise!" He is primarily located in the area called "Silver Bottle Courtyard." Haddo is in charge of the unique "Choo-Choo Cart" challenges, where players need to complete various challenges he sets to receive rewards, including valuable chests. Haddo's character design is similar to his brothers, Jeroney and Ferdinand, with all of them having features that are speculated to be associated with the Hydro element. Some players have even theorized that Haddo might be a deceased person replaced by an Oceanid. Within the game's story, Haddo is an amusing character with a unique catchphrase, who likes to refer to himself as a "train genius."