Sammy Watts is an older mouse at Angelina's school, who often causes trouble for William and Angelina partcularly. He will however apologize for being late and have kind moments here and there. His most prized possession is possibly his yo yo, though he did once warm up to Angelina(who found out it was an act)to get her to give him her yo yo. He is voiced by Jo Wyatt (UK) and Jason Marsden (US).
Gallery
Sammy at railroad crossing/level crossing
Sammy and his gang and William