4. Dormammu

In terms of power levels, Dormammu is undoubtedly the character closest to Thanos on this list. However, he is also undoubtedly slightly above the Mad Titan and you only have to look at how much closer he has proven to be to Odin in power for proof of that.

Thanos is essentially on a tier all by himself – somewhere in between Herald of Galactus level and Skyfather level, while Dormammu is essentially just above him, knocking on the door of the Skyfather tier.

Dormammu is ridiculously durable – having proven himself to be virtually unharmable by the most powerful of superhero teams – and is around the same level of durability as Thanos, but his offensive powers are more potent – as seen when he was able to harm Eternity itself (see below), albeit at potential cost to himself.

Dormammu is a member of the Faltine race – beings whose bodies are engulfed in the powerful Flames of the Faltine, which are able to destroy entire worlds.

Able to invoke powerful beings like Cyttorak and the Vishanti, Dormammu has a near-unlimited number of spells he can use in battle – the Crimson Bands of Cyttorak, for example. He is also a more powerful energy manipulator than Thanos.

His arrival in the Marvel Cinematic Universe is inevitable, given that Doctor Strange is on his way – and any potential future encounter with the Mad Titan in live action could be very interesting.