My Japanese doesn't extend too far past counting, and I think that the announcer lists him as 93 kg which is 205 pounds. He was always very light by HW standards, beginning his MMA career around 220, but there in the 1996 GP is the lightest that he ever was as a professional fighter.
He had his moments, for sure, but that's also Cro Cop at his cockiest. Against Randleman the first time, he was clearly looking past him and thinking about fighting Nog and Fedor somewhere down the road. Against Gonzaga, he clearly knew and cared nothing about the nobody who the UFC was clearly feeding to him in hopes of getting a HL reel LHK to play during the Cro Cop/Couture title fight promos. But against McDonald, he was actually cocky, dancing around and doing that windmill thing with his hand. He thought that he could walk on water in that moment. He'd just beaten the three-time GP winner and one of the GOAT, Peter Aerts, and he gave no thought at all to this random schmoe. But after suffering that humiliating defeat, he shifted into a new gear. He'd finish up his first K-1 run without another loss, smashing through everyone including the 2001 GP winner Mark Hunt before breaking Bob Sapp's face and shifting to MMA for good.