jack:
about 7 inches taller than you
davey:
4 inches taller
spot:
2-3 inches taller, not that much taller than you so you stand on your tiptoes to be taller than him. It's funny because it makes him mad.
skittery:
exactly 11 inches taller. You call him little man because he isn't exactly a foot taller. He tolerates it.
bumlets:
6 inches taller than you