How do you make monsters show up in your book?

I pvp ed with some fenrir and fight them in ladder but they don't show in my encyclopedia

Battle in a map like normal-1 jungle... I forgot to before I sacrifaced my monsters I wasted like 3 new encyclopedia entries:/

I could be wrong but I think it only counts if you encounter the monster in the map not on pvp or ladder.

has anyone seen fenrir in any expert mode?

If you own the monsters and they are not showing in encyclopedia, Use them in normal combat and then they should show. If do not own the monsters, you need to encounter them in Regular battle, not pvp or ladder.

I did team mode twice with fenrir still didn't show in my book.

Guess its normal map only