Character: kon shearo

Golden Retriever fursona of Kon Shearo - https://www.furaffinity.net/user/konshiroe/

Kon is his own father.

30 something Kon went back in time (somehow) to be an adoptive father figure to his 20 something self.

20 something Kon (Young Kon) will look just like 30 something Kon (Dad Kon) as he gets older.

When 30 something Kon becomes 40 something, he exits the picture (for now?) and goes back in time to presumably have sex with someone with a uterus, who then gives birth to Kon has a child.

Kon is his own adoptive father, biological father, adoptive son, and biological grandfather.

Young Kon has golden fur with a lighter yellow stomach, wears glasses
Dad Kon has golden fur with a lighter yellow stomach, and orange tufts of hair.

As Kon gets older, there is more orange and eventually grey (version not designed yet)