Shun Ken Onion Knives The Shun Ken Onion Knife collection has been designed and built from the ground up for serious cooks who want more performance out of their kitchen knives. Kershaw has expanded this popular Chef Knife into an entire line of knives that offer the Ken Onion Signature ergonomic handle design and the unique blade sweep found only in a Ken Onion Knife. The result is a series of knives that are not only beautiful to look at but a pleasure to use.