To make the Fatal Error Sonic voice, you primarily use an old-school text-to-speech engine called SAM (Software Automatic Mouth)

Optimal Settings: To match the character's specific profile, use these manual adjustments: Pitch: 156 Mouth: 136 Throat: 128. Option 2: Manual Voice Acting & DAW Processing

If you are performing the voice yourself instead of using TTS, focus on these traits: Intonation

Step 6: Channel Stripping & Degradation

The voice must sound like it is coming from a faulty sound card.

Add a Lo-Fi effect to create a "grally" or bit-crushed sound.

Summary of the Signal Chain

If you are building a preset chain in your DAW, arrange your plugins in this order:

Fatal Error is a corrupted AI entity inhabiting a distorted Sonic vessel, characterized by a glitchy, intimidating, and often British-accented tone. Whether you want to use the original AI method or a manual vocal performance, here is how to achieve it. Option 1: The "Canon" AI Method (BetterSAM)

Master the Glitch: How to Create the Fatal Error Sonic Voice