User blog comment:B214/Question and Answers 6/@comment-2607:FB90:603D:5340:4082:7A47:2AEA:26C5-20190112165530/@comment-10330822-20190130030046

Unlikely, Vali is like Vegeta, he's too proud of his personal strength to rely on the strength of others. However, if like Vegeta he was forced, I feel the logical person would be Issei, his polar opposite and rival. This is a good match by DBZ standards, as the Old Kai mentions that true rivals and opposites make for the most complete fusions, becuase their differences and weaknesses are compensated by the other rival.