Serge Berserker

Serge Berserker was a clansman of the Colorful.

History
Serge was murder with another clansman, Illyasviel Lee, by a dead clansman named Carlos Bashi.

Story
Serge was mentioned by both Shido and Milo Hedge as they were speaking to the blue clan. Milo stated that he and Illyasviel were 'murdered in cold blood' and were found by two other members of the colorful clan.

In chapter 21, both Serge and Illyasviel were placed at 18 and 19 on the dead clan's hit list and were reported dead.

It was soon revealed that his and Illyasviel's deaths were part of an unclear scheme of another dead clansman, Nightmare.