Horticulous Slimux
Every Garden needs a gardener. And it’s no different for the Garden of Nurgle, which has this fellow attend to it. Horticulous Slimux is a Herald of Nurgle held in pretty high esteeem by the grandfather; so much so that some think he may be one of the first Plaguebearers ever created. Nonetheless, he is an old fuck that rides around on his Molluscoid Mulch everywhere like a mobility scooter. He was also one of the first to witness the Malign Portents when he was walking Mulch in Ghyran. Little did he know that this would be the prelude to Nagash flipping his own realm upside down. After that happened, he broke a Stormvault containing a particularly dangerous Feculent Gnarlmaw.
Fun fact: Ślimak is the Polish word for 'snail'. Make of this what you will.