Dark Fusion, really? Ugh… I can’t stand that card, how can they go ahead and print, release a card glorifying forcing good to become evil. Anyway, those Funimals have a lot of draw power but lack disruptions… Tellarknights just can’t lose to decks that can’t disrupt, can they?
It's used sometimes in Fluffals just for at least some backrow protection, but the problem is it's not recoverable like poly. Satellar does better against decks like this that don't have backrow removal for sure.
I know that effect that protects the fusion summoned monster for one turn is really good, but ugh… Hao is my most despised character in all Yugioh. The whole concept of what his character is is rotten to the core, in multiple ways.
I can’t think of any deck your Tellarknights may struggle with. The release of Triverr made them really, really impressive. Sorry it’s repetitive.