Character Limericks

I recently played in a Larp that included a poetry mechanic. Limericks were specifically forbidden, so of course I have them on my mind and, well, this happened. I don't have enough distance from Reginald to feel confident about his, hence the multiple 5th lines. I'd appreciate some feedback on that one. Enjoy (if that's possible).

-- Alden

There once was a Martian princess

Flew about in a pure sable dress

Her foes she would smash

But to free up her cash

Required romantic success

There once was a swift noble Knight

Who brought darkest secrets to light

He was clever and crude

Insightful and rude

And a hell of a help in a fight

There once was a verdant haired lass

With a body of copper and brass

Though tiny in form

She's the mistress of storm

And a wellspring of infinite sass

There once was a girl unrefined

With a scalpel as sharp as her mind

She left most of her suitors

Feeling they needed tutors

With her Knight she can finally unwind

There once was a changeable chap

Followed his lord all over the map

For true love back he came

With a heavy new name

But I told you all that in a rap (Lisa thinks this is the best closing line).

There once was a terrible cad

Loved a princess who most thought was mad

Magic tarnished his name

'Til he banished his shame

But for her he would still be quite bad