Renning is a member of the Crimean Royal family, and is the younger brother of King Ramon, making him Elincia's uncle. Bastian is loyal to him and Geoffrey is his disciple. He was successor to the throne of Crimea, held by his older brother King Ramon, and was the founder and commander of the Crimean Royal Knights.
He personally helped lead the disarrayed Crimean forces against the invading Daein, marching to the front lines in order to help buy Elincia enough time to escape, but was defeated he was defeated along with the king after a direct confrontation with the Mad King Ashnard himself.
However, instead of being killed like Ramon, Renning was captured by Daein and turned into their own knight, by experimenting on him with Izuka's feral elixir (which was meant only for laguz). He then became Bertram, one of the Four Riders of Daein in The Mad King's War. After the Crimean Liberation Army defeated him, Bastian realized Bertram was in fact Renning, and though he was thought to have perished during the battle at Fort Pinell, Bastian had secretly recovered his body with the intention of healing him of his ailment.
During most of Radiant Dawn, Bastian had Renning in Castle Fayre, the former desperating trying to find a cure for the latter but to no avail. Some time after Daein's liberation Bastian hired Volke to seek a cure for Renning, which lead to the eventual capture of Izuka and his detainment at Castle Fayre. Once Ashera cast her judgement upon Tellius, Bastian and Geoffrey set off with the still-crazed Renning and the fugitive Izuka to search for Reyson. After Izuka is slain, Reyson heals Renning with the Galdr of Rebirth, and the latter joins the party the night before the decisive battle within the Tower of Guidance.
Geoffrey did mention that he now held Renning's old title and that he "wouldn't give it up easily". Renning then said that he "would remind him why he once held that position".
At the end of Radiant Dawn, instead of becoming king, he decided to help Queen Elincia, his niece, govern Crimea.
|Fire Emblem: Radiant Dawn Characters|
|Micaiah • Edward • Leonardo • Nolan • Laura • Sothe • Ilyana • Aran • Meg • Volug • Zihark • Tauroneo • Jill • Fiona • Tormod • Muarim • Vika • Nailah • Rafiel • Black Knight • Elincia • Marcia • Leanne • Nealuchi • Haar • Brom • Nephenee • Heather • Lucia • Lethe • Mordecai • Geoffrey • Kieran • Astrid • Makalov • Danved • Calill • Ike • Titania • Soren • Mist • Rolf • Boyd • Oscar • Shinon • Gatrie • Rhys • Mia • Ranulf • Lyre • Kyza • Reyson • Janaff • Ulki • Sigrun • Tanith • Sanaki • Skrimir • Naesala • Tibarn • Pelleas • Stefan • Oliver • Bastian • Volke • Ena • Kurthnaga • Caineghis • Giffca • Renning • Nasir • Gareth • Lehran|