Yup, I ship them. HARD.
Just think for a moment about this relationship. I could go on with different scenarios. I also enjoy reading and playing as Sigma in Overwatch so I look forward to his interactions with other characters.
- Both are engineered to be living weapons.
- Both love music in their own way (dancing or hearing).
- Widow is emotionless but can put Sigma in check if he goes into one of his episodes.
- Both have tragic backstories of loss love and abuse by corporations, government or organizations they have given their lives for.
It sounds toxic but some people ship Sigma with Moira. I think she would more likely to torture him with more experiments or manipulate him to her every will. For some reasons I get this vibe that Widow would understand his condition better than Moira. Change my mind.