10 cinderpelt i think that's a real warrior
9 fireheart
8 a star clan warrior:they will just give you a prophecy and run
7 ravenpaw:he is a good guy he has no need to be in a dark ally
6 nobody:if you heard a meow and saw nobody you would be scared half to death
5 graystripe
4 yellowfang
3 bluestar
2 brokenstar
1 tigerclaw

I think Hallowpaw would be a pretty formidable enemy. He so ebraced the darkness that it overwhelmed him. I forget what happened to him. Did he die in the battle between the clans and the Dark Forest?

I also think that Hawkfrost would give a good fight. He was very ambitious and clever, one of my favorite villains in the Warriors series.

I didn't know you read those books, that's cool.

i never got that far i'm only on fire and ice

I'll post my top 10 if that's ok?

10. Ravenpaw/barley
9. Starclan
8. Shadowclan
7. Dustpelt
6. Any other leader
5. Firestar
4. Brambleclaw
3. Bloodclan
2. Tigerstar
1. Scourge

0. Tigerclan! rawr!

Cats I wouldn't mind meeting in an alley include

0. Jaybae

1. Princess
2. Cody
3. Sasha/Millie
4. Other kittypets
5. A medicine cat. they're usally nice cats
6. Cloudtail/brightheart
7. _ paw
8. Ferncloud the baby maker
9. Midnight
10. Brook Where Small Fish Swim (Or another tribe cat. Maybe Crag Where Eagles Nest)

honestly scourge or tigerclaw/star or hawkfrost or any of those characters. or brokenstar. yeah no