Warning: Contains spoilers for Black Widow: Venomous #1!Black Widow is helping her symbiote partner find their own identity, in a prelude to Marvels Venom War. To improve their combined strength in the field, Natasha Romanoff discovers that the symbiote she is hosting needs to undergo some extensive training. As Natasha puts them through many of the training methods that made her Black Widow and some soul-searching, she helps the young symbiote discover their own unique self.

https://screenrant.com/venom-war-black-widow-symbiote-name-sliver-marvel/