▁Mexico , ▁those ▁that ▁port ray ▁the ▁" bad ▁guys ") ▁or ▁faces ▁( t éc n icos ▁in ▁Mexico , ▁the ▁" good ▁gu y " ▁characters ) ▁as ▁they ▁followed ▁a ▁series ▁of ▁t ension - building ▁events , ▁which ▁cul min ated ▁in ▁a ▁wrest ling ▁match ▁or ▁series ▁of ▁matches . ▁ ▁The ▁driving ▁story line ▁behind ▁When ▁World s ▁Col lide ▁was ▁the ▁emer gence ▁and ▁domin ance ▁of ▁a ▁group ▁known ▁as ▁Los ▁Gr ing os ▁Loc os , ▁who ▁had ▁become ▁the ▁top ▁r udo ▁group ▁in ▁A AA . ▁Initial ly ▁after ▁joining ▁A AA , ▁Edd ie ▁Gu err ero ▁had ▁te amed ▁up ▁with ▁El ▁Hij o ▁del ▁Santo ▁to ▁form ▁a ▁tag ▁team ▁known ▁as ▁La ▁P are ja ▁At om ics ▁" (" The ▁At omic ▁Team "), ▁with ▁A AA ▁book er ▁Antonio ▁Pe ña ▁inv oking ▁the ▁fact ▁that ▁their ▁famous ▁f athers , ▁G ory ▁Gu err ero ▁and ▁El ▁Santo , ▁had ▁formed ▁a ▁very ▁successful ▁tag ▁team ▁in ▁the ▁past . ▁The ▁Los ▁Gr ing os ▁Loc os ▁story line ▁began ▁as ▁Art ▁Bar r ▁started ▁to ▁conv ince ▁Gu err ero ▁that ▁he ▁was ▁in ▁the ▁shadow ▁of ▁Hij o ▁del ▁Santo , ▁just ▁like ▁his ▁father ▁had ▁been ▁in ▁the ▁shadow ▁of ▁El ▁Santo . ▁The ▁story line ▁t ension ▁between ▁the ▁tag ▁team ▁partners ▁was ▁bol ster ed ▁by ▁the ▁fact ▁that ▁Gu err ero ▁and ▁Hij o ▁del ▁Santo ▁did ▁not ▁get