Complex sentence: Oraclon is the only member of the Fortress crew to have been killed in battle; although a line dropped by Grimlord at the end of that particular episode demands that he'd be rebuilt immediately... which he is.
Split into simpler sentences: Oraclon is the only member of the Fortress crew to have been killed in battle. Although a line dropped by Grimlord at the end of that particular episode demands that he'd be rebuilt immediately... which he is.