Sergen is a bisexual] (male preference) male featured in Matemi's and Silver's 'Silver Soul' comic. He was introduced in Volume 2^{2] along with Meagan, Glacey and Artemis. He is now a main character following the storyline up to now Volume 6. His companions, Robin, Glacey, and Artemis accompany him, as well as Meagan and Silver.}

Trivia

¹Contrary to popular belief, the lack of resistence and acceptance of sex from Silver sparks the idea that Sergen is not gay, but instead bisexual -- but with a male preference.
Edit: Also from the remarks he makes here.

Sergen seems to have an attraction / affiliation with Finn, and makes remarks about his mass amounts of money from time to time.

Sergen is brother to Meagan^3.