He'll become available after completing the Ginyu Force Saga.
00. Force Entrance Exam
Skill acquired: Fighting Pose F
Like the other masters you have encountered so far, you have to simply reduce his HP to half to complete this mission.
01.Force Welcoming Fight
Skill acquired: Fighting Pose A
You'll be teaming up with Captain Ginyu and Guldo for this training session. You have to defeat the other members of the Ginyu Force to complete the training.
02.Force Special Training
Skill acquired: Milky Cannon
You have to fight three members of the Ginyu Force one by one, including a slightly powered up Captain Ginyu.
03. Force Very Special Training
Skill acquired: Body Change
You'll be fighting all the Ginyu force members one by one. First, you'll start with Guldo but after a few seconds, Recoome will show up, then Burter, Jeice, and finally Ginyu. If you can't defeat them fast enough, you'll be pummeled in a 5-on-1 fight. This can be a bit too much if you're not that strong so don't hesitate to change masters if ever you can't finish this last training quest yet.