Duusu  is the kwami of Emotion who is connected to the Peacock Miraculous.  With his power, Duusu's wearer can use the brooch to transform into a peacock-themed superhero. He has a very sporadic personality, with him being happy one minute and then overly sad the next. It is unclear whether this is his natural personality, being the living embodiment of emotion.  However, Duusu is a bit oblivious to the way he acts around others as well as what his owner does with his powers.

Want more information about this character, here’s the link: https://miraculousladybug.fandom.com/wiki/Duusu 

Video Audio Example: https://www.youtube.com/watch?v=ujwuxCgNHPM