Suggestions by @indiadiamond

Owen Cooper

as Jim Lake Jr. in Trollhunters: Tales of Arcadia(Live action)

+1-0Score: +1

Owen Conway

as Jim Lake Jr. in Trollhunters: Tales of Arcadia(Live action)

+0-1Score: -1

Finn Wolfhard

as Tom Riddle (young) in Harry Potter (MAX Series Reboot)

+5-14Score: -9

Jamie Campbell Bower

as Tom Marvolo Riddle in Harry Potter (MAX Series Reboot)

+21-26Score: -5