Board Thread:Questions and Answers/@comment-183.83.68.224-20200413065136/@comment-36009152-20200413100731

(Note, these are spoiler characters for the manga, it can be a different list if you only wanted only characters that appeared in the anime, and their current levels of strength).

The top ten can and has changed within a few chapters! Shikama Doji, unquestionably the current known number one has been sealed, Saito has... well we can't actually say for sure XD Mika a mere chapter ago could have been the strongest... so as of chapter 89 (number 1 being the strongest) the current ones who show themselves suitable for a place:

10. Shinoa (her scythe is back, which could be powered with a greater exposure to the one and only demon)

9. Crowley

8. Ferid

7. Basteya (if conscious)

6. Ky Luc

5. Ashera (if the serum wears off and he can possess Yu again)

4. Guren with Mahiru and Noya (or not on the list at all depending on what the next chapter shows)

3. Lest Karr (interchangeable with Krul's place)

2. Krul Tepes

1. Urd Geales