Aspen-B145

"He's sharp as his scalpels, and self-motivated. But I wonder if he demands too much of himself sometimes."

- LCDR

SPARTAN-III Beta One-Four-Five, also known by Aspen-B145, was a trainee until washing out because of his refusal to go through augmentations. After remaining on as an instructor and studying, Aspen went through the augments alongside  with many other washouts of the earlier companies, credited as the reason no Gamma was killed by the processes.

Personality and Traits
While his fears about the Beta augmentations were proved correct, Aspen was haunted by the feeling that he'd abandoned his friends in Beta Company and strove to help the future SPARTAN-IIIs. Often going for long periods of time without sleep, his efforts paid off for the Gammas, but didn't alleviate his personal guilt. Continuing to push himself in his research and development work, after the end of the Human-Covenant War Aspen found himself tired, especially with the idea of continuing war with alien races, and was glad to be assigned to the Themistocles.