But against Shampoo he's a spinless, wimy, whining coward.

You know...  By this logic, that is to say that Mousse is a coward because
he won't beat up on Shampoo to win her heart et al, you make him the
bravest character in the series.

Nope, it just makes him her slave... And slaves are boring, however cute
they may be.

Mousse will not fight Shampoo - so he is a coward.  But Mousse *loves*
Shampoo, and is NOT afraid to say so!

But he's afraid to do what he has to do to actually win her love.

Ryouga would *never* beat up on Akane, and he is too terrified to tell
Akane how he feels - therefore HE is more cowardly than Mousse - Ryouga
won't even stand up to Akane's temper, but he's more than willing to hide
behind it when shouting at Ranma.

He doesn't need to beat up on Akane... And Ryouga doesn't say because he's
SHY. There's a big difference between being shy and being a coward...

Ranma too, would NEVER hit Akane, but at least he yells back at her, even
if he *is* afraid to tell her how he feels!

See?  By your own logic, Mousse is the *bravest!*

Nope, by my logic (logic? What's that?) Mousse is a slave, and a snivelling
and whimpy one at that... He just won't go and win her love, even though
he shows everyone that he loves her.

Kun-chan...