#f:grease stain

Hello all! I havent been on in a while because i moved away to college and i only brought one furby pal with me,

but just today i bought this 2005 from someone in my college and i was wondering if anyone could offer some help? i've never seen a 2005 in person before and i dont really know how they work but i put fresh batteries in him but he's unresponsive, any suggestions would be much appreciated!!

also he doesnt have a name yet