I'm gonna update my desperation... because it's absolutely useless compared to others.
Desperation AttackName: Impure Namekian Wrath
Description: Nai clearly demonstrates that he's not good of heart (but not evil either), and it simply doesn't matter who his friends are. Yes, he'll even do this to his own brethren.
Nai can do one of two things: spend a turn transforming his ki into electrical energy, which is not visible to his opponent, and this process can not be sensed (although the opponent can sense Nai's ki dropping a little bit), or not spend a turn doing this. He will then fire electricity out of his antennae, but these rays travel so fast that they're invisible, making them impossible to dodge if someone is in its line of fire. If he spends one turn charging, everyone except Nai will be stunned for the next post. Otherwise he just stuns one person. The stunning effect lasts for a turn.
After one turn of further charging (by then everyone recovers from the stun), Nai will then unleash his fury, breaking essential joints in his opponent's body, instantly bringing them down to weakened 50% and barely able to move if he succeeds. Not very useful if the opponent is already injured, since they'll have essential joints broken anyway. Now if he spent a turn changing his ki to electricity, then he can effectively spread out his assault to anyone he stunned. The downside to this is a pretty basic one; he can't deal as much damage, but by fighting at 200% this may not matter.
If Nai does this from a rather far distance, he may stretch out his limbs when he attacks to save energy.
The whole purpose of the stunning is to just make everything more dramatic. This would be no different than Nai actually fighting at 200% suddenly for a post. You could say it's less effective overall than just suddenly fighting at 200% because he can't take advantage of his position in battle; he resets everything, allowing his opponents to focus in on him. But that's what makes it so dramatic... they know their end is near.
Also, more upgrade customization stuff:
Shockwave ->
Shock Whirlpool: Nai lets out an explosion of invisible ki all around him that pushes anyone close to him back and off balance.
It's almost moderately more draining than a shockwave, but Nai has to recover from the shock of suddenly letting out ki like that. So he appears to have the advantage over his opponent, but not long enough to take advantage of it as if he landed an ordinary shockwave. Of course, he can recover from this shock immediately if he wants to. But this maneuver in itself is moderately draining and should be used only if it'll be worth it.
btw, I'm getting rid of Syougekiha
Eye Lasers ->
Eye Laser Shield: Nai makes a small, but concentrated shield of energy using eye lasers. More effective than blocking physical attacks, but using his ki like that noticeably weakens his offensive abilities for the turn he uses it in. Overall it's Saturday Crush but used to defend against physical attacks as opposed to ki attacks. For the range which he can use this technique: If Nai can block something with his limbs, he can choose to use this technique instead, excluding the range given by Namekian stretching.