▁sees ▁through ▁Mel ▁and ▁Josh ' s ▁t ough ▁acts ▁and ▁voices ▁their ▁true ▁feelings ▁accur ately . ▁She ▁la cks ▁a ▁sense ▁of ▁advent ure ▁and ▁can ▁be ▁somewhat ▁u pt ight ▁and ▁cont rolling . ▁Despite ▁these ▁tra its , ▁she ▁is ▁the ▁most ▁kind ▁and ▁car ing ▁character . ▁C . J . ▁( O l isa ▁O de le ) ▁( 2 0 0 4 – 2 0 0 5 ): ▁C . J . ▁is ▁a ▁small , ▁quiet ▁boy ▁who ▁was ▁res cu ed ▁from ▁being ▁run ▁over ▁by ▁' Super B rian ', ▁a . k . a . ▁Brian ▁Johnson ▁we aring ▁a ▁c ape . ▁He ▁turns ▁out ▁to ▁be ▁an ▁or phan ▁from ▁the ▁children ' s ▁home ▁and ▁is ▁adopted ▁into ▁the ▁family ▁because ▁he ▁finds ▁out ▁about ▁Brian ▁and ▁Soph ie ▁being ▁al iens ▁and ▁threat ens ▁to ▁report ▁them . ▁C . J . ▁generally ▁takes ▁on ▁the ▁role ▁of ▁Brian ' s ▁' side k ick ', ▁and ▁is ▁involved ▁in ▁many ▁of ▁Brian ' s ▁rid icul ous ▁schemes ▁and ▁mad ▁ideas . ▁Har ri et ▁Harry ▁( Ste ph anie ▁F ear on ) ▁( 2 0 0 5 ): ▁Harry ▁first ▁appeared ▁in ▁Series ▁ 7 ▁E pisode ▁ 1 ▁' The ▁Tr ouble ▁with ▁Harry '; ▁Brian ▁and ▁Soph ie ▁adopted ▁her , ▁looking ▁for ▁a ▁replacement ▁for ▁Mel , ▁who ▁left ▁for ▁Canada ▁on ▁an ▁exchange ▁trip . ▁She ▁is ▁similar ▁to ▁Mel ▁in