In Hinduism, Vishnu is the preserver of the universe, and Shiva’s best friend, I believe. For some reason, I have always seen Vishnu and Shiva as being somewhat rivalled and having different outlooks.
In contrast to Shiva’s wild nature, Vishnu seems like a more careful god. He seems like a god more oriented towards kindness, compassion, mercy. I mean, besides him cheating the Asuras that one time. He seems more civil than Shiva. Maybe it’s appearances, maybe it’s concept but I think they seem like different gods with different outlooks.
Truth be told I like him as a watery and aquatic deity (he’s very associated with water), but that’s about it.