Ash212010

I have a lvl 100 garchomp and just caught a regigigas. my team consists of Charizard y, metallic venausuar mega, swampert mega, garchomp, groudon and zapdos all level 100. should i keep my team or replace one of my pokemon with regigigas

Hi, im new to this game and by going around in scorched sanctum i caught a groudon. now my question is who do i replace in my team with groudon? my team: charizard y zapdos tyranitar garchomp swampert mega metallic venausuar mega

btw now i have a lvl 100 zapdos what should i change in my team oh i forgot the moves charizard y Blast Burn, solar beam, dragon pulse, air slash garchomp dragon claw, dig, crunch, fire fang tyranitar stone edge, crunch, earthquake, thrash swampert (mega) surf, earthquake, ice beam, hammer arm zapdos discharge, drill peck, ancient power, pluck metallic venusaur (mega) sludge bomb, frenzy plant, Giga impact, earthquake

right now i have garchomp lvl 100 charizard Y lvl 100 swampert mega lvl 100 zapdos lvl 80 tyranitar lvl 100 metallic venusaur mega lvl 100