So you will know the very best pokemon at all in frontier the leader lucy have seviper,shuckle and milotic then u use metagross,megnaton and flygon make sure metagross have meteor mash to defeat shuckle and give magneton protien and have lock on and zapcannon and flygon havea earth quake second is spenser he had crobat,lapras and slaking use electrode to defeated lapras with thunder or thunderbolt use walrein to defeated crobat with blizzard and ice beam,finally use figting type pokemon not blazeken but hariyama and have cross chop,dynamycpunch and counter third is brandon only have explosion,earth quake and overheat fourth is tucker use belossom to defeated swampert use salemence and give it carbos to speed he and defeated salamence then use rhydon to kill charizard hope this help