The bulk update request #4257 is pending approval.

create alias pokemon_(series) (0) -> pokemon (499646)
create alias pokemon_(anime) (167) -> pokemon (499646)
create alias pokemon_ultra_sun (0) -> pokemon (499646)
create alias pokemon_ultra_moon (0) -> pokemon (499646)
create alias pokemon_diamond (2) -> pokemon (499646)
create alias pokemon_pearl (0) -> pokemon (499646)
create alias pokemon_platinum (0) -> pokemon (499646)

Reason: Some Pokemon tags I've seen been getting used recently. Pokemon_(series) is no different from pokemon. Pokemon_(anime) has little to distinguish it from the rest of the series, and the vast majority of its uses are just generic Pokemon art anyway. The individual games are also mostly all aliased away, but these ones aren't.