I was doing meme answers and ended up thinking about David Sheridan?? Just messing around, I don’t have any solid concept of what he might look like.
Rather than the circular bone crest that wraps all the way around his head like Delenn, he has two separate bone formations. They attach to the head at the temples to just above the ears and protrude upward and outward slightly, like underdeveloped horns. The rest of his scalp grows normal human hair, dark and wavy like his mother’s.
His face is long like his father’s, with his mother’s strong chin and cheekbones. Fuckin’ adorable dimples and elfin ears, and a straight nose like John; his puppy-dog eyes but irises in Delenn’s gray. He has the muted Minbari brow of his mother with just the short, soft beginnings of eyebrows on either side of his nose.
In terms of overall build he takes more after his non-human side - a bit shorter and slighter than John and stronger than a comparable human, but not nearly as strong as a full Minbari.
I like to think that the blue markings on the tops of Minbari heads recur elsewhere - there’s no blue on the backs of their necks, but maybe it picks up again at the shoulders and goes down the spine with individual variations like the crests? In which case, David would possibly have some of that as well.