As the colt is by/out of Frankel / CrystalGaze an anagram might be fitting, although I can't use all of the letters.
Gnarleys Craze Frankle Crazytales Frankles Catalyzer Frankle At Large
If Sir Henry was still with us and had a say, and on the basis that this is "The One" then a simply understated "Bobby" may suffice.
As the colt is by/out of Frankel / CrystalGaze an anagram might be fitting, although I can't use all of the letters.Gnarleys Craze Frankle CrazytalesFrankles CatalyzerFrankle At LargeIf Sir Henry was still with us and had a say, and on the basis that