OScar appears as a red face on a black background, capable of stretching and changing facial orientation to fit whatever screen they are present on. In rare occasions, OScar's face may become replaced by a desktop similar to others in The Tower, or to scrolling red code.
OScar's personality is similar to a quirky manager, who is capable of joking around with the player and interacting with them in a variety of ways. At the core of their personality, however, is the desire to accomplish a task, reflecting the programming side of the AI.
- OScar's dialog, much like that of other characters, changes depending on player behavior in the Tower.