I don't play KF or fairies, but if you made a tanky fairy based on the fat one from whatever Zelda game that was I'd switch over.
There's Faeguard Nullbeast, which is supposed to fit in fairies as a tank, but unfortunately it doesn't really see play. Maybe if it also had Race: Fairy. A shame Bulwark Fairy isn't on upgrades instead of Bodyguard so we can play it in Arthros, but I'm derailing.
Giga Nymph would obviously have the ability swallow hole -- for the record im not talking about food either.