Merwyn Rosemonde

Merwyn Rosemonde, one of the supporting characters and one of Gwynne Rosemonde's cousins.

Biography
Merwyn is described as a troublemaker who susually fights and argue with his younger sister, Muireann Rosemonde.

Merwyn mentioned to Oliver Hunter that "[he] gets along better with Gwynne than most of [his] family members because she's the only one who actually understands [him]."

He confessed that the reason why he causes trouble so much is to get attention. His family doesn't acknowledge him because "they only think of [him] as a troublemaker and nothing more."

He was raised by his grandparents while his sister was raised by their grant-aunt that's why he doesn't get along with his sister, they didn't grew up together to be close.

He usually hangs out with Gwynne and sometimes her boyfriend, Oliver.

Romance
It is hinted that he may have feelings for Cornelius' girlfriend, Penelope Kaminski. And she have the same feeling about him since he was her high school crush.

Penelope told Eily that "Cornelius treats her more like a doll or a trophy than an actual girlfriend. Often bragging about his relationship with her to Merwyn." because he knows about their mutual feelings for one another but refuses to let go of Penelope.

It is unknown if he and Penelope ended up together in the end. But they did share an embrace at the end of the series after Cornelius disappeared along with the others. It is unknown whether they suffered the same fate or survived.