Power levels

@ :- This sign means the class is divided into three sub class.{ LOWER/ MIDDLE/ HIGHER}

Tier 9 :

This class consist of Normal Beings [ Humans, Animals etc...!]

Tier 8 : @

This class consists of Low class devils/ Studemt magicians/ 1-3 Pair winged Angel or Fallen Angel.

Tier 7 : @

This class consists of Mid class devils/ Teacher magicians/ 4-6 Pair winged Angel or Fallen Angel.

Tier 6 :

This class consists of High class devils/ Master magicians/ 7-9 Pair winged Angel or Fallen Angel.

Tier 5 :@

This class consists of Ultimate class devils/ Principal magicians/ 10-12 Pair winged Angel or Fallen Angel.

Tier 4 : @

This class consists of Satan class/ Seraph (13-15 Pair winged angel or Fallen angel)

Tier 3 : @

This cass consists of God/ Suer devil/ 16 Pair winged angel or Fallen Angel.

Tier 2 : @

This class consists of Powerful beings who are capable of destroying the world.(OPHIS/ GREAT RED / TRIXEHA / James Lucifer)

TIER 1 : @

This class only consist of one being (ORIGIN) . He is the creator of every world, multiverse. (other information not available)

ORIGIN can be considered as origin god who created DxD world and distributing his some of other to form other lesser god.(Odin etc.)