Leonard Fiennes (レナード・ファインズ Renādo Fainzu?) is a fictional character in the side stories of Mobile Suit Gundam 00. In Mobile Suit Gundam 00P, Leonard is introduced as a young Super Soldier who is test piloting the MSJ-06YIII-B Tieren Kyitwo with his partner Delphine Bedelia for the Human Reform League's Next Generation Technology Development Laboratory. He later reappears in Mobile Suit Gundam 00I 2314 as a Gundam Meister for Fereshte, with codename Leo Sieg (レオ・ジーク Reo Jīku?), piloting the GN-006/SA Cherudim Gundam SAGA, the GN-007/AL Arios Gundam Ascalon, and the GNZ-001 GRM Gundam. By A.D. 2314, he evolves into an ELS/Innovator Hybrid and was one of the pilots of GNW-100A Sakibure in A.D. 2364.