there are many beings that can defeat SCP-3812/Sam Howell of the SCP-Foundation, I'll just index/list a few of them as the list could be long.
1. The Divine Creator (J. M. DeMatteis Marvel Cosmology)
2. The White Light ( Transrealist)
3. The Amaranth/Godhead (Elder scrolls lore)
4. God/The Ein Sof (Unsong)
5. Azathoth (H.P. Lovecraft Universe)
6.One above all/One below all (Marvel Comics Gestalt supreme being)
7.Eru Iluvatar (Tolkienverse)
8 The Great Will ( Shin Megami Tensei)
9. The Majestic Presence ( I/O Revision II)
10. The Creator ( Umineko When They Cry)
11. The Emperor Beyond The Sea (The Chronicles Of Narnia)
12. Anu (Elder scrolls lore)
13. Kami tenchi (Tenchi Muyo)
14. Gan/The Other (Dark Tower)
The White Light, Undoubtedly first, Mathiverse, God Unsong, Jehovah (WoD), Buddha (WoD), Bondye (WoD), The Weaver (WoD), Goddess of Manifold, Downstreamers and Meme Characters
1. The Divine Creator (J. M. DeMatteis Marvel Cosmology)
2. The White Light ( Transrealist)
3. The Amaranth/Godhead (Elder scrolls lore)
4. God/The Ein Sof (Unsong)
5. Azathoth (H.P. Lovecraft Universe)
6.One above all/One below all (Marvel Comics Gestalt supreme being)
7.Eru Iluvatar (Tolkienverse)
8 The Great Will ( Shin Megami Tensei)
9. The Majestic Presence ( I/O Revision II)
10. The Creator ( Umineko When They Cry)
11. The Emperor Beyond The Sea (The Chronicles Of Narnia)
12. Anu (Elder scrolls lore)
13. Kami tenchi (Tenchi Muyo)
14. Gan/The Other (Dark Tower)