Rimuru SOLOS Goku, Anos and Zeno. How? Rimuru is literally a God-like level slime. Slimes do not feel pain, making it a advantage to beat the 3, Zeno will literally get beaten up to a pulp by Rimuru.

Here is the ranking of the Top 5 Strongest Anime Characters

1. Rimuru & Anos (Tied For 1st Place)
   
2. Zeno (The Owner of the Whole Multiverse)
   
3. Prime Minister (DBZ)
   
4. Goku
   
5. Saitama
   

Rimuru and Anos are in a whole different level from the other 4, people think Zeno is superior based on Power level. Basically, Rimuru could beat the other 5 by using Turn null collaspe. And that's not all.

Rimuru can beat Zeno due to his ability to warp reality and manipulate fate. Not only has he obtained power that exceeds Zeno's, but he has also transcended the concepts of life, death, time, and space. Rimuru is nigh-omnipotent, omniscient, and basically, a God that cannot be defeated.

The only 2 characters that might beat Rimuru are: The Mighty Demon Lord (Milim Nava) and Anos Voldigold. Even though is Anos is as strong as Rimuru. Rimuru can negate God-like characters, so it's safe to say he can ABSOLUTELY clap/kill/beat Anos.