Hawksilver

Hawksilver is the slash ship between Clint Barton/Hawkeye and Pietro Maximoff/Quicksilver from the Marvel fandom.

Canon
On the attack of a HYDRA research base, Clint shoots an explosive arrow toward a HYDRA bunker, which is caught mid-air by Pietro, who knocked Clint off his feet right after, mocking him with "You didn't see that coming?".

The two met again at the fight in the Salvage Yard but didn't talk much until Wanda attempted to hex Clint, but failed due to him placing a taser arrow on her head. Pietro saved her and then threw Clint out a window. After putting his sister in a safe place, Pietro attempted to go back in to kill Clint, but was stopped by Wanda which told him to continue with the plan.

After switching sides and during the birth of Vision, Clint shot a bullet through the glass beneath Pietro and mocked him with his words when they first met.

The Avengers and the twins eventually started the battle of Sokovia with Ultron. After a while of fighting and Pietro changing his mind about SHIELD, Clint attempts to save a boy when Ultron attacks him, but is saved by Pietro who pushed him out of the way. His last and dying words to Clint were, "You didn't see that coming?"

Clint and his family then decided to name their newborn son Nathaniel Pietro Barton in honor of him and his self-sacrifice.

Fanon
In Archive of our Own, there is over 700 works in Clint Barton/Pietro Maximoff

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