This is a Miniprofile, which is smaller than a normal profile to give a succinct snapshot of a character.
Outspoken and hotheaded, Sprig is dedicated to his work as Commander. He expects effort, if not perfection, and his standards are notoriously high. But, his pride in his colony is also enormous, and he diligently protects it and its people as a whole with all of his power. And, granted, as Commander, that's a lot of power.
He majored in gyne running, in External Management, preferring the exhilaration and intensity of what he considered the most-challenging aspect of combat. This changed when, in Letter Colony, he was cornered by a group of aner, all armed, all primed to kill - and rather than fight his way out, he blasted them away from himself with magic. Sprig transferred into the mage unit instead, learning to hone his abilities.
When the previous Commander retired, Sprig dueled the other candidates for the position, and came out on top by the skin of his teeth - with his last rival, Oleander, surrendered at the last second. Even now, though, Sprig still feels tense around Oleander, uncertain of the other's motives or actions.
Regardless, he's slotted into his job's responsibilities well, taking its weight with his head held high. Sure, Cleverly and Jules might drive him to drink, but that's a small sacrifice for his colony.