User blog comment:B214/Light Novel Volume 16 spoilers/@comment-1884090-20131126185230

27+Charcters with enough screen time to count I Don't count all of Sona's peerage just her and Saji same with Sairaorg"s Peerage I consider them the plus sigh after 27. 8 Longinus(I'm including Cao Cao, Georg and Leonardo because they might all join DxD)Possible 9th for Gasper

These count everyone in Team DxD 5 Hybrids,24 Sacred Gear(Including Sona''s Peerage Artificial Sacred Gear and Count Saji as having four),5 Demon swords, 3 Holy swords(counting Ex-Durandal as one)  1 Lucifier, 30+ Devils(includes Hybrids wedon't yet Know how full Seekvaira's peerage is yet), 7 humans (includes Hybrids based on Hybrid Category not sure on Sairaorg's peerage because they have only labeled them as Mixed Heritage Devils), 2-8 Fallen Angels(Hybrid's and Leader's Of Grigori), 2 Nekomata, 3 Youkai in General, 5-6 Dragon(6 if you include Issei and Ddraig two diffrent Beings) 3+ Angels and 1 Budha Thats alot of Power