Here, Gasoline Alley shows us that Fighters should be able to climb. Well, actually, I think every class should have the ability to climb trees. Some games would just assign a big modifier to a skill check, but I think we can waive a mechanic entirely for tree climbing.
Hatchet men would be another name -- and perhaps a less offensive name, for Yellow Peril Hoodlums. I plan to retain this mobster type, though I'm seriously considering adding to them that they are adept at ambushes, with perhaps a 3 in 6 chance of surprise.
The Dick Tracy installment reminds us of more tools available to "modern day" Heroes of the '30s and '40s -- though not as available as fireworks -- the lie detector and the "trick mirror" that can be seen through from the other side.
Wikipedia tells me that bison at Yellowstone National Park are three times as likely to harm people than bears, and I've long since statted bears! The American bison would have 6 HD, trample for 1-10+1 damage, and use 12-siders for Hit Dice because of their mass.
(Scans courtesy of Digital Comic Museum)