For Red Furry Demon.
1. Lock him in the same room as his brother until they get angry and start fighting. Then remark on how childish they are acting.
2. Or lock him in the same room as Grindelwald and tell them to work out their "relationship troubles like grownups."
3. Give him socks for Christmas. A lot of socks. His heart's greatest desire would be fulfilled.
4. Accuse Severus Snape of being a Death Eater and a murderer.
5. Petrify him and put a huge bag of lemon drops in his sight.
6. Ask him why he is so fascinated with candy in a suspicious voice.
7. Tell him about how popular the new "Dumblemort" ship is becoming.
8. Ask him about his affair with Gellert Grindelwald.
9. Then inform him that people all over the world know about both of his affairs with Dark Lords.
10. Drug all of his lemon drops with a love potion tied to Severus Snape.
I know that this is later than I planned, but I am back at school, so I'll be updating every few days instead of every few hours. Next up is... Hermione! (I think)