Note: As of April 3, 2022, I have left the forums. I am not updating this post any longer. I put a copy/pasteable version of the list at the end of the thread if anyone wants to pick it up. Thanks for letting me a part of all this for the time it lasted.
I was curious about how heroes have evolved over time, and went looking for a chronological listing. I didn’t find one, so I took a stab at making one myself using the forum, the wiki, release notes, and @Razor’s enphero.com. Most of these heroes were released before I even knew of the game, so please let me know where I got something wrong.
Total released: 376 heroes and 93 costumes
2017 - 86 heroes
March 2017 - Initial Release (58 heroes)
- Azar
- Balthazar
- Bane
- Belith
- Berden
- Brienne
- Carver
- Dawa
- Gan Ju
- Graymane
- Gunnar
- Hawkmoon
- Isshtak
- Jahangir
- Kailani
- Karil
- Nashgar
- Oberon
- Prisca
- Renfeld
- Tyrum
- Ulmer
- Valen
- Boldtusk
- Boril
- Caedmon
- Chao
- Colen
- Cyprian
- Gormek
- Grimm
- Hu Tao
- Kelile
- Kiril
- Li Xiu
- Melendor
- Rigard
- Sabina
- Scarlett
- Skittleskull
- Sonya
- Tiburtus
- Wu Kong
- Azlar
- Elena
- Horghall
- Isarnia
- Joon
- Justice
- Leonidas
- Lianna
- Magni
- Marjana
- Quintus
- Richard
- Sartana
- Thorne
- Vivica
April 2017 - First Spring Event (3 heroes)
- Squire Wabbit
- Jack O’Hare
- Master Lepus
June 2017 - First HOTM and Season 1 Wave 2 (6 heroes)
HOTM-1: Hel
- Friar Tuck
- Kashhrek
- Little John
- Elkanen
- Kadilen
July 2017 - HOTM (1 hero)
HOTM-2: Athena
August 2017 - HOTM (1 hero)
HOTM-3: Ares
September 2017 - HOTM and first Pirates of Corellia (6 heroes)
HOTM-4: Mushashi
- Boomer
- Peters
- Captain Kestrel
- Lady Locke
- Sargasso
October 2017 - HOTM, Season 1 Wave 3 and first Guardians of Teltoc (9 heroes)
HOTM-5: Alberich
- Domitia
- Khagan
- Obakan
- Guardian Falcon
- Guardian Jackal
- Guardian Kong
- Guardian Owl
- Guardian Panther
November 2017 - HOTM (1 hero)
HOTM-6: Thoth-Amun
December 2017 - HOTM (1 hero)
HOTM-7: Perseus
2018 - 55 heroes
January 2018 - HOTM and first Knights of Avalon (6 heroes)
HOTM-8: Natalya
- Merlin
- Sir Lancelot
- Guinevere
- King Arthur
- Morgan Le Fay
February 2018 - HOTM (1 hero)
HOTM-9: Zeline
March 2018 - HOTM (1 hero)
HOTM-10: Delilah
April 2018 - HOTM (1 hero)
HOTM-11: Aeron
May 2018 - HOTM (1 hero)
HOTM-12: Alasie
June 2018 - HOTM, first Fables of Grimforest and first Sand Empire (12 heroes)
HOTM-13: Gravemaker
- Gretel
- Hansel
- Boss Wolf
- Red Hood
- Rumpelstiltskin
- Arman
- Hisan
- Gafar
- Jabbar
- Rana
- Yunan
July 2018 - HOTM (1 hero)
HOTM-14: Gregorion
August 2018 - HOTM and start of Season 2 - Atlantis (18 heroes)
HOTM-15: Drake Fong
- Chochin
- Gato
- Gill-Ra
- Melia
- Mnesseus
- Namahage
- Agwe
- Ameonna
- Danzaburo
- Gadeirus
- Gobbler
- Proteus
- Sumitomo
- Triton
- Wilbur
- Misandra
- Tarlak
September 2018 - HOTM and Atlantis Wave 2 (2 heroes)
HOTM-16: Khiona
- Mok-Arr
October 2018 - HOTM and first Return to Morlovia (4 heroes)
HOTM-17: Aegir
- Vlad
- Valeria
- Victor
November 2018 - HOTM (1 hero)
HOTM-18: Zimkitha
December 2018 - HOTM, Atlantis Wave 3, and first Santa's Challenge (7 heroes)
HOTM-19: Evelyn
- Inari
- Mitsuko
- Rudolph
- Buddy
- Mother North
- Santa Claus
2019 - 35 heroes
January 2019 - HOTM and Atlantis Wave 4 (2 heroes)
HOTM-20: Onatel
- Kageburado
February 2019 - HOTM, Atlantis Wave 5, and first Riddles of Wonderland (8 heroes)
HOTM-21: Kunchen
- Ariel
- Atomos
- Captain of Diamonds
- Cheshire Cat
- Alice
- Queen of Hearts
- The Hatter
March 2019 - HOTM and Atlantis Wave 6 (2 heroes)
HOTM-22: Frida
- Poseidon
April 2019 - HOTM and Atlantis Wave 7 (3 heroes)
HOTM-23: Anzogh
- Muggy
- Ursena
May 2019 - HOTM (1 hero)
HOTM-24: Margaret
June 2019 - HOTM (1 hero)
HOTM-25: Ranvir
July 2019 - HOTM (1 hero)
HOTM-26: Seshat
August 2019 - HOTM (1 hero)
HOTM-27: Miki
September 2019 - HOTM and second round of Avalon heroes (4 heroes)
HOTM-28: Grazul
- Bauchan
- Black Knight
- Lady of the Lake
October 2019 - HOTM and second round of Pirates heroes (4 heroes)
HOTM-29: Kingston
- Vodnik
- Finley
- Marie-Thérese
November 2019 - HOTM and second round of Wonderland heroes (4 heroes)
HOTM-30: Neith
- Shrubbear
- Jabberwock
- White Rabbit
December 2019 - HOTM and second round of Grimforest heroes (4 heroes)
HOTM-31: Grimble
- Pixie
- Puss in Boots
- Snow White
2020 - 72 heroes and 41 costumes
January 2020 - HOTM, second round of Guardians heroes, and first round of costumes (4 heroes and 20 costumes)
HOTM-32: Vela
-
Guardian Bat
-
Guardian Chameleon
-
Guardian Gazelle
-
Bane costume
-
Brienne costume
-
Gunnar costume
-
Hawkmoon costume
-
Tyrum costume
-
Boldtusk costume
-
Li Xiu costume
-
Melendor costume
-
Rigard costume
-
Skittleskull costume
-
Sonya costume
-
Tiburtus costume
-
Elena costume
-
Horghall costume
-
Isarnia costume
-
Joon costume
-
Lianna costume
-
Quintus costume
-
Richard costume
-
Vivica costume
February 2020 - HOTM and start of Season 3 - Valhalla (17 heroes)
HOTM-33: Jean-François
- Bjorn
- By-Ulf
- Ei-Dunn
- Kvasir
- Nordri
- Brynhild
- Mireweave
- Mist
- Stonecleave
- Sumle
- Fenrir
- Freya
- Heimdall
- Ratatoskr
- Sif
- Tyr
March 2020 - HOTM and Valhalla Wave 2 (2 heroes)
HOTM-34: Telluria
- Norns
April 2020 - HOTM, Valhalla Wave 3, and second round of Springvale (6 heroes)
HOTM-35: Malosi
- Chick Jr.
- Lady Woolerton
- Killhare
- Sir Roostley
- Alfrike
May 2020 - HOTM, Tavern of Legends bonus, Valhalla Wave 4, and Costumes Wave 2 (13 heroes and 21 costumes)
HOTM-36: Clarissa
-
Myztero
-
Agnes
-
An-Windr
-
Grevle
-
Jarvur
-
Sudri
-
Almur
-
Fura
-
Gullinbursti
-
Jott
-
Shadereave
-
Baldur
-
Azar costume
-
Balthazar costume
-
Belith costume
-
Berden costume
-
Carver costume
-
Friar Tuck costume
-
Isshtak costume
-
Karil costume
-
Prisca costume
-
Renfeld costume
-
Boril costume
-
Caedmon costume
-
Kashhrek costume
-
Kiril costume
-
Little John costume
-
Azlar costume
-
Domitia costume
-
Elkanen costume
-
Kadilen costume
-
Magni costume
-
Sartana costume
June 2020 - HOTM, new Sand Empire hero, and Valhalla Wave 5 (3 heroes)
HOTM-37: Raffaele
- Roc
- Skadi
July 2020 - HOTM and Valhalla Wave 6 (2 heroes)
HOTM-38: Noor
- Lady Loki
August 2020 - HOTM and Valhalla Wave 7 (2 heroes)
HOTM-39: Zocc
- Frigg
September 2020 - HOTM and Valhalla Wave 8 (2 heroes)
HOTM-40: Bai Yeong
- Bera
October 2020 - HOTM, first Ninja Tower, second round of Morlovia, and Valhalla Wave 9 (14 heroes)
HOTM-41: Zulag
- Ametrine
- Sapphire
- Shale
- Cobalt
- Garnet
- Jade
- Mica
- Onyx
- Jack
- Frank
- Francine
- Vanda
- Gefjon
November 2020 - HOTM and Valhalla Wave 10 (2 heroes)
HOTM-42: Glenda
- Odin
December 2020 - HOTM, Valhalla Wave 11, and second round of Santa’s Challenge (5 heroes)
HOTM-43: Reuben
- Frosty
- Carol
- Krampus
- Lord Loki
2021 - 103 heroes and 47 costumes
January 2021 - HOTM, Valhalla Wave 12, and Costumes round 3 (2 heroes and 25 costumes)
HOTM-44: Bertila
-
Thor
-
Dawa costume
-
Gan Ju costume
-
Graymane costume
-
Jahangir costume
-
Kailani costume
-
Nashgar costume
-
Oberon costume
-
Ulmer costume
-
Valen costume
-
Chao costume
-
Colen costume
-
Cyprian costume
-
Gormek costume
-
Grimm costume
-
Hu Tao costume
-
Kelile costume
-
Sabina costume
-
Scarlett costume
-
Wu Kong costume
-
Justice costume
-
Khagan costume
-
Leonidas costume
-
Marjana costume
-
Obakan costume
-
Thorne costume
February 2021 - HOTM, and first League of Villains (11 heroes)
HOTM-45: Uraeus
- Edd
- Skrekok
- Ingolf
- Sanngrior
- Asterius
- Crystalis
- Dark Lord
- Isrod
- Karnov
- Toxicandra
March 2021 - HOTM and start of Season 4 - Underwild (17 heroes)
HOTM-46: Malicna
- Gramps
- Helo
- Morris
- Poppy
- Vollermork
- Griffin
- Mack
- Rokkamush
- Tettukh
- Zila Lei
- Akkorog
- Dr. Moreau
- Elizabeth
- Lepiota
- Phileas Fogg
- Prof. Lidenbrock
April 2021 - HOTM and Underwild Wave 2 (2 heroes)
HOTM-47: Frosth
- Garjammal
May 2021 - HOTM and Underwild Wave 3 (2 heroes)
HOTM-48: Yang Mai
- Russula
June 2021 - HOTM, Underwild Wave 4 and first Starfall Circus (14 heroes)
HOTM-49: Elradir
- Candy
- Whacker
- D’Andre
- Eichbelborg
- Marcel
- Bobo
- Director Zuri
- Eiora & Fluffy
- Emilio
- Faline
- Theobald
- Hannah
- Morel
July 2021 - HOTM, Valhalla Wave 13, Underwild Wave 5, and Sand Empire costumes (3 heroes and 2 costumes)
HOTM-50: Devana
-
Aouda
-
Salmon Loki
-
Rana costume
-
Yunan costume
August 2021 - HOTM, first Slayers of Fell Shadows, and Underwild Wave 6 (12 heroes)
HOTM-51: Chakkoszrot
- Maeve
- Noril
- Aodhan
- Cillian
- Orla
- Caitlin
- Cathal
- Rian
- Saoirse
- Senan
- Captain Nemo
September 2021 - HOTM, first Tower of Magic, and Underwild Wave 7 (13 heroes)
HOTM-52: Alexandrine
- Dölgöön
- Kornel
- Anastasia
- Anton
- Sergei
- Agrafena
- Cristóbal
- Milena
- Motega
- Nadezhda
- Xnolphod
- Zenobia
October 2021 - HOTM, first Clash of Knights, Underwild Wave 8, Morlovia costumes, and HOTM costumes round 1 (10 heroes and 7 costumes)
HOTM-53: Russell
-
Aderyn
-
Bertulf
-
Ferant
-
Wren
-
Esme
-
Ludwig
-
Quenell
-
Wolfgang
-
Octros
-
Frank costume
-
Francine costume
-
Vanda costume
-
Victor costume
-
Alberich costume
-
Gravemaker costume
-
Seshat costume
November 2021 - HOTM, second round of Ninjas, Underwild Wave 9, Atlantis costumes and Black Friday previews (7 heroes, 4 costumes)
HOTM-54: Balbar
-
Quartz
-
Ruby
-
Zircon
-
Lughaidh
-
Peñolite
-
Gaillard
-
Poseidon costume
-
Ursena costume
-
Kageburado costume
-
Ariel costume
December 2021 - HOTM, Christmas costumes & new hero, first Challenge Festival, Underwild Wave 10 & 11 (10 heroes and 9 costumes)
HOTM-55: Hanitra
-
Mr. Pengi
-
Passepartout
-
Zekena
-
Treevil
-
Guardian Lemur
-
Phoenicus
-
Sally
-
Gnomer
-
Exeera
-
Santa Claus costume
-
Mother North costume
-
Krampus costume
-
Lady of the Lake costume
-
Snow White costume
-
Jabberwock costume
-
Alasie costume
-
Drake Fong costume
-
Athena costume
2022 - 25 heroes and 5 costumes (YTD)
January 2022 - HOTM, 2nd Clash of Knights, Underwild Wave 12 (7 heroes)
HOTM-56: Viscaro
- Rayne
- Eloise
- Quintin
- Lewena
- Franz
- Congalach
February 2022 - HOTM, New Ninjas, 2nd Challenge Festival, Underwild Wave 13 (4 heroes, 2 costumes)
HOTM-57: Iris
-
Topaz
-
Peridot
-
Kravekrush
-
Marie-Thérèse costume
-
White Rabbit costume
March 2022 - HOTM, WoTK heroes, Underwild Wave 14 (14 heroes and 3 costumes)
HOTM-58: Zagrog
-
Lu Bu
-
Diaochan
-
Zhuge Liang
-
Zhang Fei
-
Guan Yu
-
Wang Yuanji
-
Sun Shangxiang
-
Xiahou Dun
-
Zhou Yu
-
Yao
-
Jing
-
Li
-
Hulda
-
Killhare costume
-
Master Lepus costume
-
Jack O’Hare costume
Pending (not included in total count above):
Unreleased, in beta (25 heroes and 11 costumes)
-
Waqas [Season 5]
-
Faiez [Season 5]
-
Bennu [Season 5]
-
Jarif [Season 5]
-
Rekhetre [Season 5]
-
Aqeela [Season 5]
-
Junaid [Season 5]
-
Ptolemy [Season 5]
-
Azmia [Season 5]
-
Ahhotep [Season 5]
-
Scoratek [Season 5]
-
Khonshu [Season 5]
-
Sobek [Season 5]
-
El Naddaha [Season 5]
-
Khafre [Season 5]
-
Papyros [Season 5]
-
Horus [Season 5]
-
Khepri [Season 5]
-
Cao Cao [War of the Three Kingdoms]
-
Sun Quan [War of the Three Kingdoms]
-
Liu Bei [War of the Three Kingdoms]
-
Silvaria [April 2022 HOTM]
-
Tethys [Season 2]
-
Oceanus [Season 2]
-
Kara [May 2022 HOTM]
-
Finley costume [Challenge Festival]
-
Black Knight costume [Challenge Festival]
-
Rumpelstiltskin costume [Challenge Festival]
-
Guardian Kong costume [Challenge Festival]
-
Guardian Panther costume [Challenge Festival]
-
Inari costume [Season 2]
-
Wilbur costume [Season 2]
-
Ameonna costume [Season 2]
-
Gadeirus costume [Season 2]
-
Melia costume [Season 2]
-
Mnesseus costume [Season 2]