Manga] I so want them to tag team this guy like Mard Geer, but it will most likely be just Natsu as usual, while Gray will fight a dumbass like Sai, again... :
Fem!Mard Geer Tartaros The Absolute Demon by NA-stasia on DeviantArt
Natsu Dragneel & Gray Fullbuster vs. Mard Geer Tartaros | Fairy Tail Wiki | Fandom
Natsu Gray vs Mard Geer! Sting Rogue vs Jiemma – Fairy Tail 261 | Daily Anime Art