Anagrams

Below, 4 anagrams complete with clues. A bonus point for the common link between them all.
Anagram 1

APT HELEN

His friends call him Babar.

Anagram 2

ANDREA RASHEST

Big, cold and hot.

Anagram 3

ARMY DIPS

Old, hard and pointy.

Anagram 4

ERIN LIVER

Way longer than you think.