Board Thread:General Discussion/@comment-27996636-20170610190640/@comment-31063493-20170611190801

Semi-Perfect Cell is the only one that isn't farmable.

Vegeta and Tien from Super Strike. Super Buu from the event. Kid Gohan from the R TEQ (although it is like a 5% chance) and Teen Gohan can be raised by the Hero of Justice STR Gohan (only 5% chance) and the WT Gohan.