Before everything went to crap, these were the members of Tatsuo pack who he bled for, and who he killed for.
Starting from left to right -
Rayne - The anima user. A gentle woman who took a shine to her captain, despite the prejudices flying around the Kingdom of Karnack. Loves to use combustion anima on her enemies.
Pence - The archer. A party hound who enjoyed a good drink, a good lay, an refining his skills with his bow. He didn't have a problem with being under the command of a war hound, especially after he learned how much of a party hound Tatsuo could be.
Joshua - The Heavy Weapon's Exepert An older human that had seen a lot of conflict and was prepared to either retire or die on the field of battle before being stationed under Tatsuo's command. A generally wise figure who taught Tatsuo many things about politics and how to keep his temper around the nobility.
Carlos - The dualist. A quiet young man who didn't say much, but often had a lot of on his mind. It took a while for him to open up to Tatsuo, but not because he hated the other, but before he didn't know what to think of the passionate war hound.