Another updated "Imagine It!"/"Aureate Afterglow!!" Sticker.

The frame features the Characters' faction.

Dr. Golden "Prepare-Up!" the Mischief Mastermind himself is The Leader of Evil Fraction: Nefarious Empire.

He's the Hedgehog behind the Intrigue...
(responsible for all the Malicious Schemes, Evil Plans, and so on)

And the one, who wants to gain a total control over everything by capturing and trapping the main protagonist: Silent "Player-On!".

Also, the Doctor is mainly responsible of mind controlling
(alongside with Shadow Sonic "Midnight-Up!") poor Origin Sonic "Midday-Up!".

Also, what secret is he hiding? His true human form... Dr. Golden "Prepare-Up!" is truly indeed: Dr. Eggman "Conquer-Up!"

In the comic (main story mode) he mainly wanted to regain his old appearance, which was unlocked thanks to Silent "Player-On!" in the bad ending.
Even after (extreme custom mode) he still tries to capture and trap the protagonist.
Now he can change between his two forms, anytime he want. Ok, no more spoiling.

Also, Dr. Eggman "Conquer-Up!" = New upcoming Sticker.
And with that whole "Aureate Afterglow!!" sticker series will be completed.
Next will be "Hush! & Hustle!" sticker update.

Since Dr. Golden "Prepare-Up!" is related to fangame "Aureate Afterglow!!" the post is on the gamepage as well.