I found a website devoted to Bob Wilkins:
http://www.bobwilkins.net/
Looks like he passed away in 2009. There are DVDs available of him hosting Creature Features but the films included are not the ones from the original broadcasts due to rights issues. I ordered one anyway. I wish I had...
I'm my family's early cable days we would watch "Creature Features" on KTVU channel 2 Oakland, CA. First hosted by Bob Wilkins (who was also Capt. Cosmic during the day) and later by John Stanley. Great Saturday night fun!