The answer depends which number 96 you are looking for due to pokedex differences there are multiple #96's and they are: Drowzee, Nidorina, Swalot, Happiny, Foongus, Umbreon, Plusle, Hariyama, and Torkoal.
Drowzee can be caught in multiple games, Nidorina is the evolved form of Nidoran Female, Swalot is the evolved form of Gulpin, Happiny is the pre-evolution of Chansey, Fonngus can be caught starting in Black and White, Umbreon is the evolution of Eevee at night when Eevee has max friendship, Plusle can be caught in multiple games starting in Ruby and Sapphire, Hariyama is the evolved form of Makuhita, Torkoal can be caught in multiple games starting in Ruby and Sapphire.
from which pokedex other wise i cant answer
Happiny
Drowzee is #96 in the national pokedex, and it is a Psychic type Pokemon.
happiny
Happiny in the sinnoh pokedex and in the national pokedex number 96 is drowzee
If you mean #96 of the Sinnoh Dex, that would be Happiny, the "baby" stage of Chansey. If you are looking at the National Dex, Drowzee is #96.
it is Happiny and you can get it from the Hiker in Hearthome city.
its the devolved form of chansey i forget what its called but i heard you can get an egg which it hatches out of It's Happiny
Chinchou is number 170 in the National Pokedex, number 174 in the New Pokedex, number 176 in the Johto Pokedex, #181 in the Hoenn Pokedex, and number 147 in the Coastal Kalos Pokedex.
Sceptile is number 3 in the Hoenn Pokedex and number 254 in the National Pokedex.
Rayquaza is Pokedex number 384.
ON sinnoh pokedex is number 15 Kricketot on Natiol pokedex number 15 is: Beedrill