Goes by alfabetic order? lol there are so many reasons
Answer:
Option 2: Are made by mixing Primary with adjacent Secondary Colors
Explanation:
Did I get it right for you , let me know :)
Doppio is a much more regular person in contrast to Diavolo: friendly, honest, and a bit cowardly. Doppio regularly hallucinates random objects as "phones" with which he talks with his alter-ego, not knowing that they share the same body.