The story of Mahabali and Vamana.
For all those misunderstandings, Mahabali was not a landlord to have such an oversized body but he was an Asura raja (demon king) who captured the trilokas (3worlds) and finally captured the position of lord Indra and pretended to rule the world including the devas . As for this all the devas requested lord Narayana for help and hence he took his 5th avathara Vamana and regain back the trilokas with his intellectual interaction with the king and send him to Suthala a place renowned among all the lords and narayana itself guraded him there and not to pathala which is a misconception. Also he promised him to make bali the next Indra too. This is the actual story of Mahabali and vamana and not the story which is prevailing right now.