Captain Leonatos has to be one of my favourate characters in the 40k universe and I've been planning a coversion of him for awhile now. I resently picked up a Gabriel Seth model to make Castigon, Captain of the 4th company. But decided to use other bits for that so as I'm not planning on making Flesh Tearers but want to use the model my eyes caught my copy of the Bloodquest graphic novel. Then while looking at Seth's rules I thought they best suited Leonatos making it possible to field him as something more than a captain.
So far I've just green stuffed on his hair and filed off the flesh tearers icons ready for blood angels one. I've also added his personal heraldry of the winged skull onto his shoulder and plan to green stuff more detail soon.