Possible Clues:

• Animated
• Ultimately less cold, becoming vivacious
• Lively, high-spirited
• Manager Anderson
• Baseball's Lyle
• Anderson or Lyle of baseball
• Army radioman's nickname
• Radar's radio contact on 'M*A*S*H'
• Spirited skier, initially cold
• 'South Park' dog or former baseball manager Anderson