Mohn & Lusamine

Details: Should you Return To Aether Paradise after having defeated Gladion as a challenger in the Pokemon League, you will come to find Mohn there. If you followed the storyline, you should remember that Mohn, the husband of Lusamine and the father of both Lillie and Gladion, lost his memory after coming into contact with an Ultra Wormhole. (Much like Lillie temporarily had after Nebby teleported the two through one, as well as Detective Anabel back in Pokemon Sun & Moon).

If you approach Mohn, Lusamine will appear and spot him, and the two have a conversation. Mohn, still with amnesia, will compliment Lusamine on the Aether Paradise, noting how he does similar things with Poke Pelago. Before leaving, Lusamine asks him if this is his first time coming to Aether Paradise, and he tells her it is. Realizing he still doesn't remember their life together, Lusamine lets Mohn depart without saying another word. As he leaves, Gladion will appear and ask his mother if she's alright leaving things the way they are with her husband and their father. She will give a nod with a smile, noting that he seems happy.