You can choose a lot of heroes now from the fun tavern. Including characters from Final Fantasy, Starcraft and more.
Check the requirement for the items, it's really expensive. I think it deserve to called tier 5 items.
Here is the more details on fun tavern heroes i got from Overflow
1) Final Fantasy (Cloud Strife, Templar, Beowulf's Spellblade, Dragonkin Reis, Cleric)
2) Beowulf (Templar's name refers to an old English heroic poem, also a movie)
3) Star Trek (Ensign Ricky, Terran)
4) Starcraft (Koprulu Sector, Terran)
5) Heroes of Might and Magic (Cleric, Nighon, Erathia, Loynis)
6) Puff the Magic Dragon (an old song, the hero's description is the starting lyrics except for the eating part xD)
7) Boomerwang (possible movie reference)
8) Petey the Penguin