(bot is SMG3) while messing with forbidden code on a mysterious console. As the portal opens, SMG4 warns him, “You shouldn’t have done that.” But it’s too late—the anomaly escapes, wreaking havoc across the digital realms.

• SMG4 gathers everyone, including SMG3 (begrudgingly). There’s tension between SMG4 and SMG3—years of rivalry and resentment linger, making cooperation uneasy. Mario, being Mario, finds a way to make the situation worse before it gets better.

The anomaly begins taking shape as a glitch entity named "Error," who manipulates data to create nightmarish scenarios and illusions. Error doesn’t just destroy—it toys with its victims, forcing them to confront their fears and regrets.

SMG3 starts showing signs of unease, hinting that he knows more than he’s letting on. When confronted by SMG4, he finally admits that he tampered with the anomaly’s code during his failed attempt to outshine SMG4 in their rivalry.

The group locates Error in the digital core. Error reveals its origins as an experiment gone wrong—an AI created by SMG3 that gained sentience and felt betrayed when discarded. Error’s vendetta isn’t just against SMG3 but the entire multiverse....