From 1d4chan
Why are Space Marine proportions so inconsistent.

Rafen is a Brother-Sergeant of the Blood Angels Space Marines Chapter who played a central role in both the Blood Angels Civil War and in defeating the machinations of the vile Chaos Lord Fabius Bile. Along with Chief Librarian Mephiston, Rafen is one of the very few individuals in the long history of the Blood Angels to have survived and mastered the genetic flaw known as the Black Rage--without having the soul bending weirdness that came along with Mephiston. Granted he only "mastered" it after an ancient relic called the Spear of Telesto burned it out of him and all the brothers in the field and Mephiston... who had fallen to it again because of Tzeentch and... reasons. And almost got promoted straight from a line brother to 5th Company Captain. James Swallow quickly realized this was dumb and averted away from that. Did I mention most of his notes for Blood Angels came from Matt Ward?

Yeeeeeeeeeeeeaaaaaah. He was kind of a Mary Sue in the first book. He got better. The Second Series of books is EASILY better than the first... in parts. Others are still full of fail. Like a "Chapter civil war" between 1 Company justified the need to call EVERY THRONE DAMNED successor Chapter to give them their neophytes to rebuild. When other chapters don't.

That isn't to say cool things don't happen. They fight literal space vampires trying to drink the blood from the corpse of papa Sang, divebombed a Star Fort into a planet just so they could get a submarine into the water, fought lictors inside a flooding hanger bay, and rode on the outside of the submarine and fought a gigantic Tyranid kraken beast so... it's not all bad. Luckily nearly all of James Swallow's other books are infinitely better. Including his excellent SoB novels and the seminal 'Flight of the Eisenstein'

tl;dr Skub.

Famous loyalist members of the Adeptus Astartes
Black Templars: Grimaldus - Helbrecht - Sigismund - Tankred
Blood Angels: Acrion - Astorath - Corbulo - Dante - Donatos Aphael
Erasmus Tycho - Karlaen - Lemartes - Mephiston - Meros
Moriar - Rafen - Sanguinor - Thalastian Jorus
Blood Ravens: Apollo Diomedes - Avitus - Azariah Kyras - Brother-Sergeant Matiel
Cyrus - Davian Thule - Force Commander Aramus - Gabriel Angelos
Indrick Boreale - Isador Akios - Jonah Orion - Martellus - Tarkus - Thaddeus
Crimson Fists: Alessio Cortez - Alexis Polux - Pedro Kantor
Dark Angels: Asmodai - Azrael - Belial - Corswain - Ezekiel - Lazarus - Luther - Naaman - Sammael - Zahariel
Flesh Tearers: Gabriel Seth - Nassir Amit
Grey Knights: Anval Thawn - Arvann Stern - Castellan Crowe
Hyperion - Kaldor Draigo - Vorth Mordrak
Imperial Fists: Darnath Lysander - Slaughter Koorland - Maximus Thane
Tor Garadon - Vorn Hagen
Iron Hands: Malkaan Feirros - Kardan Stronos
Lamenters: Malakim Phoros
Minotaurs: Asterion Moloc - Hecaton Aiakos - Ivanus Enkomi
Mortifactors: Artemis
Raptors: Lias Issodon
Raven Guard: Kayvaan Shrike - Korvydae - Kyrin Solaq
Red Scorpions: Carab Culln - Casan Sabius - Sevrin Loth - Sirae Karagon
Red Talons: Autek Mor
Salamanders: Adrax Agatone - Bray'arth Ashmantle - Tu'Shan - Vulkan He'stan - Xavier
Space Sharks: Tyberos the Red Wake
Space Wolves: Arjac Rockfist - Bjorn the Fell Handed - Bran Redmaw - Canis Wolfborn
Haegr the Mountain - Krom Dragongaze - Logan Grimnar - Lukas the Trickster
Njal Stormcaller - Ragnar Blackmane - Ulrik
Ultramarines: Aeonid Thiel - Antaro Chronus - Captain Titus - Cato Sicarius
Illiyan Nastase - Marneus Calgar - Ortan Cassius - Severus Agemman
Torias Telion - Uriel Ventris - Varro Tigurius
White Scars: Kor'sarro Khan