The Smurfs
Hefty's Heart/A Hug for Grouchy
S3 E106:
Hefty's Heart: Gargamel infects Hefty's heart with hate and uses the little Smurf as a decoy to lure the others. A Hug for Grouchy: Grouchy learns that emotions can be good, especially after the evil Chlorhydrus creates a heart of ice to magically drain everyone of care and love.