Koichi "Red Slayer Guy" Tanaka
| First Name : | Koichi |
| Last name : | Tanaka |
| Nickname : | Red Slayer Guy |
| Height : | 5'6" (171cm) |
| Weight : | 154 lbs (70 kg) |
| Country : | Japan |
| Record : | 0 - 6 - 0 (Wins - Losses - Draws) |
| Losses : |
2 Technical Submission (Armbar) (33.33%) 1 Decision (Unanimous) (16.67%) 2 Decision (Majority) (33.33%) 1 Submission (Triangle Choke) (16.67%) |
| Association : | Muso Senjitsu |
| Match Stats | ||||||
| Result | Opponent | Method | Event Title | Date | Round | Time |
| Lost | Hiroshi Komatsu | Decision (Unanimous) | Shooto - GIG West 2 | Sep 23, 2001 | 2 | 5:00 Sec |
| Lost | Yoshihiro Fujita | Technical Submission (Armbar) | Shooto - GIG West 1 | Feb 18, 2001 | 1 | 3:58 Sec |
| Lost | Yohei Nanbu | Decision (Majority) | Shooto - Renaxis 3 | Aug 4, 1999 | 2 | 5:00 Sec |
| Lost | Tetsuji Kato | Technical Submission (Armbar) | Shooto - Las Grandes Viajes 1 | Jan 17, 1998 | 1 | 1:01 Sec |