Which is the best?

[Dark Samus Aran]

Okay, since im stupid and dont know how to make polls. (if someone will PM how to, that would be appreciated.)
Anyway, I wont your guys opinion on the best 2D bosses. (I didnt find this anywhere else)
Mines either Nightmare or... The Metroid Queen from Return Of Samus
They both push me to the limit... I dont collect energy tanks alot, so the battles are much, much harder.

[Doc Scratch]

There's a "best bosses" stickied topic in Metroid General Discussion. However, that's all bosses. There's also a "Best Fusion Boss" thread a few pages back on this forum, but that's obviously only Fusion bosses.

As for my favorite, probably Phantoon from Super Metroid. I love the atmosphere of the Wrecked Ship, and seeing Phantoon spooked me. The actual battle is intense, with lots of dodging fireballs, and the limited space helps.

[samusfan]

Nightmare push me too hard,but mecharidley from 15itens hard (zero mission)was a big problem for me.

[Metroids 4 Breakfast]

My favorite 2D Boss is SA-X because the first time I fought him, it was an epic battle. He would try to attack, I dodge it, I attack, he dodges. We would just go back and forth.

[Mayan Mystery]

Oh, this is an easy one. Draygon. He's so friggin easy it's kind of funny. And plus the way you kill him is badass, I mean, using the grapple beam to channel electricity to him and kill him, that's just sick. I like it so much I never beat him the traditional way (also partially because I'm lazy.)