Gromit
International Man of Misery
They need you tbf. As you probably know, they used to have exactly those people doing exactly that job, called the Green Police. Last year, they replaced them with 'Gaia's Guardians', who went round persuading people not to drop litter through the medium of song. I'm not sure it entirely worked...
TBH I don't litter but those green police made me want to litter. The Gaia's Guardians would definitely have had me dropping rubbish.