Well im basing this on old knowledge but...
Kyogre
Regirock
Registeel
Regice
Rayquaza
Latias (depending on what colour Pokemon you said you saw on the tv after elite four)
Latios (depending on what colour Pokemon you said you saw on the tv after elite four)
That's about it I think. I suppose Relicanth and Wailord CAN be classed as a semi-legendary as they are rare and needed to get the regi trio.
You can get three rare candies in Pokemon ruby sapphire and emerald
U CANT GET 100 RARE CANDIES ON POKEMON SAPPHIRE. (-_-)
Tropius is not rare.
no
there arent any
kyorge celebi and groundon
Pokemon ruby sapphire and emerald
try rare candies
you cannot clone rare candies in sapphire. you can use Action replay to get more however
you can get feebas on route 119 very rare
Nosepass is a rare Pokemon in the game Pokemon Sapphire. It can only be found by using Rock Smash on boulders in Granite Cave.
They are rare on Route 117