Not much is known about Corvus Glaive in Avengers: Infinity War, but what is clear is that he poses a serious threat.
He one of the most powerful children of Thanos, and his last name comes from the insanely dangerous weapon that he wields.
He will be seen helping Thanos hunt for Infinity Stones, and should be a crazy dangerous opponent for any of the many, many heroes in the blockbuster.
The glaive is not only incredibly sharp and can cut through anything, but in the comics as long as it is in one piece Corvus Glaive is immortal (it’s not 100 percent clear if that will be featured in the film adaptation).