Here is nicknames: https://yodayo.com/posts/6bd059d7-db54-4656-b07c-a07adf830959 And this is right answers who behind it:

1-Perun 2-Mokosh 3-Rusalka 4-Chernobog 5-Koschei the Deathless 6-Gork&Mork 7-Helios 8-Daedalus 9-Medusa 10-Hephaestus 11-Charon 12-Artemis 13-Atropos 14-Atlas 15-Hermes 16-Prometheus 17-Persephone 18-Odysseus 19-Hades 20-Chronos 21-Azathoth 22-Cthulhu 23-Michael 24-Azrael 25-Noah 26-Durin 27-Uriel 28-Shub-Niggurath 29-Gabriel 30-Solomon 31-Odin 32-Thor 33-Loki 34-Heimdall 35-Skuld 36-Fenrir 37-Hel 38-Freya 39-Skadi 40-Surtr 41-Ra 42-Anubis 43-Isis 44-Osiris 45-Horus 46-Thoth 47-Yog-Sothoth 48-Set 49-Bastet 50-Nyarlathotep 51-Hastur 52-Ishtar 53-Enkidu 54-Idunn 55-Gilgamesh 56-Emperor of Humanity 57-Ereshkigal 58-H.P. Lovecraft 59-Dracula 60-Beelzebub 61-Sun Wukong 62-"J. R. R." Tolkien 63-Heavenly Demon 64-Ares 65-Nian Beast 66-Joan of Arc 67-Tiamat 68-Buddha 69-Tang Sanzang 70-Daji/Kitsune/Nine-tailed fox 71-Arthur Pendragon 72-Merlin 73-Lady of the Lake 74-Galahad 75-Dagda 76-Morrigan 77-Orpheus 78-Chu Chulainn 79-Oberon 80-Cernunnos 81-Quetzalcoatl 82-Tezcatlipoca 83-Minamoto no Yorimitsu 84-Amaterasu 85-Tlaloc 86-Lancelot 87-Robin Hood 88-Lucifer 89-Asmodeus 90-Aphrodite 91-Sherlock Holmes 92-Moriarty 93-Don Quixote 94-Heracles 95-Chaos 96-Dagon 97-Zeus 98-Poseidon 99-Brunhilde 100-Romulus