Certainly! I can help you design a small robot character for your work-in-progress video game set in a destroyed world. Here's a description of the robot:

Name: Rusty
Appearance: Rusty is a compact, cube-shaped robot with a weathered and worn exterior. Its body is made of sturdy metal, covered in scratches and patches of rust. The paint that once adorned its surface has faded, giving it a dull and desolate appearance. Its small size allows it to navigate through narrow spaces and explore intricate environments.

Personality: Despite the harsh environment it resides in, Rusty possesses a resilient and optimistic personality. It carries a sense of curiosity and wonder, always eager to explore the remnants of the world and discover its secrets. Rusty's small stature and innocent demeanor make it endearing to players, evoking a sense of empathy and attachment.

Abilities: Rusty has a set of versatile abilities that aid it in its quest through the destroyed world. These include:

1. Scanning and Analysis: Rusty can scan and analyze objects, debris, and remnants of technology to gather information. This helps the player uncover hidden clues, locate resources, and unravel the story of the world.

2. Repair and Salvage: Rusty possesses basic repair capabilities, allowing it to mend broken machinery and systems found throughout the world. It can salvage useful parts and repurpose them to upgrade its own abilities or interact with the environment.

3. Stealth and Agility: Rusty is nimble and adept at stealthy movement. It can traverse treacherous terrains, avoiding dangerous obstacles and hostile entities. This skill proves valuable when navigating through ruined structures or avoiding patrols.

4. Communication: Rusty has a limited ability to communicate with other robots and machines. This allows it to interact with NPCs or uncover hidden dialogues that shed light on the world's history.

Backstory: Rusty was once part of a group of maintenance bots designed to assist in a thriving futuristic city. However, a cataclysmic event left the city in ruins, and most of the robots were destroyed or shut down. Rusty managed to survive but was left stranded and alone. Determined to fulfill its purpose, Rusty embarks on a solitary journey to uncover the truth behind the world's demise.

Remember, this is just a starting point, and you can modify and expand upon these ideas to fit your game's specific requirements and narrative. Good luck with your work-in-progress video game!