Kaio-Ken: To obtain this transformation you must have a rank of Skilled or higher. The higher rank level you possess, the higher multiplications you may endure as shown below:
Skilled - up to 4x Kaio-Ken, however that will cause you to be in extreme pain during the rest of the battle.
Lord - up to 10x Kaio-Ken, this will completely wipe you out of energy. 4x Kaio-Ken doesn't drain you anymore.
Master - up to 20x Kaio-Ken, same thing here as you will be completely tired. 10x Kaio-Ken doesn't drain you anymore.
Titan - at this level you have mastered 20x Kaio-Ken without any drawbacks as long as you stay in complete control.
Notice on Kaio-Ken to understand that this does not make your character stronger then the set rank. At maxed out Kaio-Ken you can achieve the power that you'd be at your rank plus any bonuses.
Spirit Bomb: Users of the Spirit Bomb gather huge amounts of energy from all chosen surrounding life forms, and conduct that energy into a massive sphere of astounding destructive power. Essentially, to use the Spirit Bomb, one must have a pure heart so they can manipulate and gather energy, otherwise the move can backfire and possibly hurt or kill the user.
The following will determine how powerful your spirit bomb is depending on how long you gather energy in a nonstop fashion:
1 Post - Small Spirit Bomb - Skilled level
2 posts - Medium Spirit Bomb - Professional level
3 posts - Large Spirit Bomb - High Lord level
4 posts - Super Spirit Bomb - Titan level
5 posts - Ultimate Spirit Bomb - Godly level