Suggested by Sonic Deimos is a strong monster and has one of the cooler designs in Buddyfight. In their base forms I have no doubt that he would be a Jack with ease. Fortunately for Jackknife Dragon, he has had several power ups over the series including a Thunder Form and one that was buffed with future tech. I believe that these new armaments will prove to be the difference in battle and will give Jackknife enough firepower to get the job done. Jack Knife Dragon wins.