Brodus Clay did an interview with CT.com – here is an exert:
Q: Did you come up with the Funkasaurus idea or did somebody else pitch it to you?
A: Actually, the original nickname that I was told — it scared me to death — was Heavy G. I think the last thing you want to be known as is Heavy anything. No offense to Heavy D — rest his soul. Worked for him, wasn’t really my bag. Rob MacIntyre, who I trained with, was a big reason behind me dropping me a hundred and 50 pounds. Him and I were lifting weights and making jokes, trying to figure out better names. First it was the Funk Monster and then Funk Nasty. Then, he looked at me and [said], ‘Funkasaurus’ and started laughing, and he pitched it.
The writer was like, ‘I’ll get ready [your] debut. What are we going to call you?’ I was like, ‘I don’t want to be Heavy G.’ He was like, ‘Look, man, I’ve got like 12 other things to do. Just call yourself whatever you want to call yourself’ so I told the announcer to call me the Funkasaurus. He looked at me like I was crazy. I’m like, ‘I don’t know why I want to be the Funkasaurus.’ So I got lucky that the swamped writer had other things going on. Luckily, it stuck.