Quiz question number 7 (Patreon)

Hello, dear patrons! I guess, everybody had a chance to rest with the easy question of the last week. Everyone needs a break, especially in holidays hurry-scurry!
But now surely everybody got the time to rest, also we shouldn't relax too much, so the question of this week will be Demonic difficulty level and will be valued in 3 points: "Who got the certificate?" Hope it won't be too hard for you :3

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The previous week's question answer was *slime sound*, everyone got it right and got 1 point! 

Some rules:

• Please, give your answers only in our PRIVATE MESSAGES. Answers in the comments won't be accepted. 
• Answers shall be given in 7 days (including the day question was posted).  When next Sunday starts on GMT the answers already won't be accepted.