UNDEAD CORPORATION is a two-man Japanese melodic death metal band which consists of パインツリー (Pine Tree) from monochrome-coat as the arranger, rhythm guitarist, bassist and also the vocalist (occasionally). The other member is 平野幸村 (Yukimura Hirano) from Unlucky Morpheus as the lead guitarist, lyricist and main vocalist of UNDEAD CORPORATION. The band was formed in 2010.

The band has also invited few guests as lyricists and vocalists for some of their works. The most notable guests were 朱美 (Akemi), ウエストヴィレッジ (West Village). They also had invited a few others such as 天蓋冬樹 (Fuyuki Tenge), ランコ (Ranko), めらみぽっぷ (Merami-POP), Bach (from Thousand Leaves), Rib:y(uhki), まさきんぐ (Masa King) and 桂琳 (Katsura Rin).