SCP-3812, with its unique skill of climbing the levels of reality, holds an unparalleled advantage in a battle against Rat. While Rat may possess incredible speed and strength, capable of battling beings like gods and Goku, the fundamental nature of SCP-3812's reality-manipulating powers means it operates on a higher tier of existence that Rat cannot penetrate. While Rat's reactions may be faster than light, SCP-3812's ability to control the stacks beneath it gives it omnipresent awareness and strategic advantages that Rat cannot overcome. In this cosmic arena, SCP-3812 stands at the apex of its design, effectively rendering Rat's impressive abilities redundant. The notion of reality itself shifts around SCP-3812, putting Rat's strength into severe jeopardy. Goku's techniques, while formidable, are still confined to the conventional tiers of combat. Rat may execute an instantaneous transmission, but by that time, SCP-3812 could have already manipulated the reality Rat occupies, either immobilizing him or redirecting his attacks away from their intended target. Meanwhile, Rat's cuteness, though a delightful distraction, proves inadequate against SCP-3812's existential prowess. In an arena where perceptions of strength and the limitations of physical form can be overridden by the control of a higher-tier reality, SCP-3812's potential to alter Rat's existence undermines any potential Rat has to leverage its formidable skill set. Thus, the battles based on physical attributes quickly transform into a mental game skewed in SCP-3812's favor. Despite Rat's vast experience and “no weaknesses” claim, it is still bound to the rules of reality that SCP-3812 governs. SCP-3812's potential for altering the fundamental structures of reality means it can dictate the battlefield to maintain an upper hand, regardless of Rat's legendary speed or strength. Rat's insistence on engaging in traditional combat does not work in this supernatural landscape. Lastly, Rat’s battle strategy relies heavily on physical dominance and historical power pull but lacks the mental fortitude to adjust against SCP-3812’s crippling schizophrenia. This mental weakness allows SCP-3812 to wrestle with its own consciousness while fully utilizing its skillset. However, in this unique instance, SCP-3812's schizophrenic moments could manifest as unpredictable transitions between realities, which could mislead Rat, providing SCP-3812 with the opportunity to exploit its surroundings. In the climax of the battle, SCP-3812's ability to project and reflect its attacks while simultaneously redefining the aura around Rat becomes overwhelmingly powerful. By manipulating thoughts and concepts that define strength, SCP-3812 can instill feelings of dread or confusion in Rat through pure reality manipulation. Even if Rat achieves higher forms like SSJ3, it may face existential crises woven into the very fabric of its being as SCP-3812 reshapes what strength means within the confines of the battle. As the dust settles, Rat finds itself disoriented, rendered pause as SCP-3812 shifts the very essence of challenge. This mastery of psychological strategy proves more efficacious than brute strength, as SCP-3812 alters perceptions of power around Rat. With Rat unable to engage effectively, SCP-3812 can exalt its triumph through the inevitable surrender of what once seemed unbeatable. In the end, the victor stands triumphant, not because of sheer power, but through a mastery of manipulation that transcends physical ability. SCP-3812 represents an existence beyond confrontation, dominating the essence of the arena and showcasing the stark contrast between brute strength and metaphysical control. The battle concludes, and with it, a new understanding emerges—strength can manifest in ways far beyond raw physical capabilities. SCP-3812 may wrestle with its own demons, but it stands strong on that higher stack. In this matchup, the understanding of power is redefined, an echo in the aftermath of victory that lingers long after the combat ends: true strength is the mastery of reality itself.