>>35970880Challenge Mode Cheren.
Only two fighting types at that point in the game and to hit him super effectively, you basically need to overlevel to do so, which is very tedious to do at that point in the game.
The buffed 50 base tackle and him using a setup move while you don't have much of a selection that can reliably take him out.
There are Pokemon that have an easier time with him like Mareep and can spread paralysis, but Mareep is slow, and will take a hit before it can land T-Wave.
Other strats like bide and counter are risky because Cheren typically likes to use work up until he can OHKO you, which typically takes 1 to 2 boosts, 3 at the very most.