I nominate Xatu as a check
Xatu @ Heavy-Duty Boots/Leftovers
Ability: Magic Bounce
EVs: 252 HP / 52 Def / 144 SpD / 60 Spe
Calm Nature
IVs: 0 Atk
- Roost
- Psychic
- Heat Wave
- Teleport/Grass Knott/Calm Mind/Toxic
Xatu thanks to his type resists psychics attacks without being weak to Fire/Fairy which means that Indeedee can't hit super effective Xatu . Xatu even without any bulk investment can avoid the 2hko of any scarf Indeedee attack with the exception of hyper voice. But if spdef it can even check Hyper Voice scarf Indeedee and non-hyper voice specs Indeedee and if you don't run boots it can avoid the 2hko after rocks of any non-hyper voice scarf Indeedee set. Xatu has access to reliable recovery so it cant get worn down like most Indeedee checks. Xatu has three main problems which make it a check and not a counter, the first one being psychic spdef drops, because of Xatu being only able to 4hko Indeedee at best ( or a 3hko if you get lucky with rolls after rocks) , Indeedee can spam psychics fishing for a drop , scarf needing two drops and specs only one, this can be fixed by running toxic xatu which means that Xatu can stall out Indeedee while roosting or CM xatu, the second problem for Xatu it's trick if Indeedee tricks Xatu, Indeedee it's going to win the 1v1 100% of the time and the last of Xatu problems it's specs hyper voice (and the random sball Indeedee) which can 2hko Xatu.
Calcs:
Scarf Indeedee:
-252 SpA Indeedee Hyper Voice vs. 252 HP / 144+ SpD Xatu: 129-153 (38.6 - 45.8%) -- guaranteed 3HKO
-252 SpA Indeedee Psyshock vs. 252 HP / 52 Def Xatu in Psychic Terrain: 91-108 (27.2 - 32.3%) -- 78.1% chance to 3HKO after Stealth Rock and Leftovers recovery
Specs Indeedee:
-252 SpA Choice Specs Indeedee Psyshock vs. 252 HP / 52 Def Xatu in Psychic Terrain: 137-162 (41 - 48.5%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
-252 SpA Choice Specs Indeedee Hyper Voice vs. 252 HP / 144+ SpD Xatu: 193-228 (57.7 - 68.2%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
Xatu vs Indeedee:
-0 SpA Xatu Heat Wave vs. 0 HP / 4 SpD Indeedee: 68-81 (26 - 31%) -- 22.6% chance to 3HKO after Stealth Rock