Kai D. O = Kaido
Donquixote D. Oflamingo = Donquixote Doflaming
Croco D. Ile = Crocodile
I pointed that one out but I spelled it Donquixote D. Flamingo.
But you can seriously do this for anyone with a "D" in the middle of their name.
Boo D. Le
Bran D. New
Catarina D. Evon
Croco D. Ile
Curly D. Adan
Devil D. Ias
Donquixote D. Flamingo
Edwar D. Newgate
Fullbo D. Y
Gal D. Ino (Mr.3)
Ge D. Atsu
Hil D. On
Ka D. Ar
Kai D. O
Kuma D. Ori
Lip D. Oughty
Mon D. A
Pan D. Aman
Sal D. Eath
So D. Om
Span D. Am
Span D. Ine
Vander D. Ecken
Wa D. Atsumi
X D. Rake