Adonis is Ambrosia's twin brother. Adonis only likes himself and always stares into a mirror to admire his own beauty.
Like his sister, he has True Loves Magic, which can undo any curses around them, and like his sister, he is not attending to Regal Academy anymore and now is being homeschooled again. Just like how all the boys are in love with his sister, all the girls are in love with him, but he pays no attention to them as he only loves himself.