If your software allows, shift the formant up. This makes the voice sound smaller and more "bratty" or digital without changing the actual pitch. 3. Bitcrushing (The Corruption)
The most authentic way to recreate Fatal Error's voice is through the how to make fatal error sonic voice
A spark jumped.
If you aren't a voice actor, many creators use or other vintage-style TTS engines. Type your lines into a SAM emulator. Export the robotic voice. Apply the Pitch Shifting and Bitcrushing steps above. If your software allows, shift the formant up