Avengers:

Captain America

Where is the mask behind the shield

Whereas only your words have an impacts?

Will you stay unbreakable to thousand bullets

To be the hero of the gigantic city?

Thor

Controlling the fierce element of thunder

Are you rather a God or a king?

Faced to your own "blood" : Loki

Let go your legendary power.

Iron Man

Behind the face of the playboy,

Remains a genius who won't destroy

Any lives by his famous inventions.

The armor became his own creation.

Hulk

Smash as a motto for the green monster

Heal for the scientist Bruce Banner

Two opposed minds in one body

Their life is a constant battle for living.

Hawkeye

The bow, a weapon with arrows

Each of them reached their targets

No missed shot, you're like a shadow

You won't give up until you 'll get it.

Black Widow:

Female animal embodied by fiery hair,

Athletic body and a so stoical beautiful face,

You're the fierce assassin who raised,

In the blaze and murder of your own blood.

Scarlet Witch:

Worst fears disguised in nightmarish reality

Crimson wave beating up the enemy,

Once a lab rat, you fought for the liberty

Which took away your precious twin.

Hope you enjoy guys! I'll try to update more so be patients my young padawans. ;)