Ditto

Ditto has a unique niche on bulky teams as a revenge killer due to its ability Imposter, which allows Ditto to scout movesets, deter setup sweepers, and matchup well against stall since it has pseudo-infinite PP so long as it can switch around. However, Ditto is far more situational than other revenge killers that can more easily fulfill that role while providing more utility. It is susceptible to all entry hazards, compromising its ability to switch in without a sack or pivot support. It also cannot take advantage of every setup sweeper, as bulkier setup sweepers like Reuniclus, Jirachi, and Gliscor ultimately end up winning against it, further decreasing its value. It is also blanked by Substitute users such as Breloom, Thundurus-T, and Jirachi, further limiting its ability to take advantage of offensive threats it could otherwise come in on and gain momentum against.