Doctor Euelli Berris is a physicist employed by Kenita-Deng Incorporated, a business which manufactures and innovates industry-standard drive core and gate components. Berris is the head of developmental research, and is usually found working from the company's orbital factory facility at Kementhast Prime.
As the Great War of the Shaeld started to become more overt, Doctor Berris was contacted by Reximillian Bel-Kenita shortly after he was evacuated from the surface of Kementhast. The pair briefly discussed his research project, among other things, since that was a source of fascination and wonder for Doctor Berris (→IDOD).
The pair had known each other for a very long time, and Bel-Kenita considered Doctor Berris to be empathetic, with an "incredible talent for envisioning complex systems".
Comments made to Doctor Bel-Kenita by Voice, while aboard the ICS Ardent, suggest that Berris succumbed in some fashion to the same virus which creates Rasas.