Board Thread:General Discussion/@comment-6192846-20150822000535/@comment-6192846-20150822034221

Seth. OSS Act 2 and the Pierrot novel explicitly name him as being the one who approaches the mortally wounded Irina and putting her into her cat body during the full moon following the catastrophe. Seth himself was apparently mortally injured too (severely burned) and saved her for whatever reason before going off and dying somewhere.