So let's take a look at the picture Lucy posted and one recent one.
I read years ago he had plastic surgery to reduce his ear projection.
If you look at early pics of both zer0s, they have both had cosmetic surgery.
That said, I lean toward the father being the Indonesian cult leader.
The ear and head picture that counts is the Left Side which you will have more difficulty finding.
A more significant image comparison might well be on the other side of his head (Left). Those are more difficult to come by although Lucy came up with a couple of those also.
The ear on that side is an interesting comparison.
Also the major scar on the left side is significant. His hair is grown out in the later images so you can't tell about the scar. And in some of the early later images, you don't see any trace of the scar; in the later later versions, you see a tiny indication above the ear which looks almost transplanted in.
We don't have leg scar comparisons.
He has always had a skin tone problem, even in the 80's. In the early days, it was known that he used a skin conditioner (dye). Politically, he needed to be a black.
In my view, his true father was a black with significant white ancestry (mother, Barry's grandmother); a mother who had a white parent; and a father with some white ancestry.