Which level 1 creature is better?

It's hard to choose between the Centaur and the Halberdier...
So I'll vote for the Fairy!!! They dominate in the early stages thanks to their speed and retaliatory strike.

I'm also voting for the Fairy!!! A very cool tactic for defense: you wait, the turn passes, you fly out from behind the walls, strike without retaliation. A new turn begins, you fly back. And so on in a loop....