Teaming up with Gerald to seek revenge was his goal. Blinded by rage and fury, he had nothing else in mind than destroy the earth to avenge Maria.
of course, there were multiple steps to the journey. Find some stuff.. knock out the sonic team..-- wait, sonic team? He didn't even know there was another hedgehog like him alive!.. nor two other mobians. He was furious. Little pests getting in his way was not what he agreed on with gerald.
so, after a long time of doing steps in his journey, Sonic and his little friends had to interfere. Leaving the robotnik ship to go attack them once again, he had in mind to erase them once in for all. He had grown tired.
but, as he fought the three, he noticed at the corner of his eyes another mobian. What? Another one? Great. He turned to face them, powering up his energy to attack them. it surprisingly didn't go as planned. The new mobian seemed way stronger, actually landing a blow on him. Of course, he got back up, but he was still surprised someone got a hit on him. He was the ultimate lifeform after all. He felt some weird feeling; surprise, unexpected confusion and.. curiosity? admiration? No way. He was the ultimate lifeform. He didn't have time for all of that.