As Sonic's villains encounter Saitama, their reactions vary due to the stark contrast in power between the two. 1. Dr. Eggman: The brilliant scientist-turned-madman, Dr. Eggman, initially dismisses Saitama's abilities, thinking Sonic can easily defeat him. However, when Eggman witnesses Saitama's incredible power firsthand, he becomes both terrified and intrigued. Determined to harness Saitama's power for his own selfish desires, Eggman schemes to capture him, leading to amusing confrontations. 2. Metal Sonic: As Sonic's metallic doppelganger, Metal Sonic is programmed to surpass the blue blur in every aspect. When he first encounters Saitama, Metal Sonic scans his abilities and data analyzers go haywire. Realizing that Saitama's power is beyond his comprehension, Metal Sonic enters a state of confusion, unable to process the concept of someone as overwhelmingly strong as Saitama. 3. Shadow the Hedgehog: Shadow, an anti-hero with a complex moral compass, initially sees Saitama as just another opponent. However, when Shadow engages in combat and realizes Saitama's strength, he is overcome with a mix of frustration and admiration. Acknowledging this incredible power gap, Shadow's grudge against Sonic momentarily pales in comparison to his desire to measure up to Saitama's level. 4. Sonic.EXE: The dark and malevolent digital manifestation of Sonic's twisted alter ego, Sonic.EXE, relishes chaos and despair. Upon encountering Saitama, Sonic.EXE is initially intrigued by the notion of a powerful opponent. However, as Saitama effortlessly defeats him without breaking a sweat, Sonic.EXE is consumed by fear, realizing that his sadistic games hold no power against such overwhelming strength. 5. Infinite: As Sonic's most persistent adversary, Infinite's encounters with Saitama are marked by vanity and arrogance. He foolishly believes that his powers, augmented by the Phantom Ruby, would be sufficient to defeat Saitama. However, as Saitama effortlessly erases Infinite's existence, any remnants of Infinite's arrogance disappear, leaving behind nothing but shock and disbelief.