Sanguinius

Sanguinius is the Primarch of the Blood Angels. He grew up on Baal Secundus. He is characterized by being the nice one of the Primarchs. He appears in the following continuities:
 * In Bloody Mary's Lovehammer continuity, Sanguinius is apparently friends with everyone, save the for traitors.
 * In the Scattering of Serenity Sanguinius turned to Horus and is Daemon Prince.
 * In Karmaverse he runs the Imperium of Mankind along with Magnus the Red.