Egyptian Desert Subtheme
Who is Who?
Professor Kilroy
Amazon Jungle Subtheme
Dino Island Subtheme
Orient Expedition Subtheme

Adventurers 
Who is Who? 
Johnny Thunder
Professor Kilroy
Miss Pippin Read
Harry Cane 
Mike
Babloo
Sangye Dorje
Jing Lee
Mr. Hates 
Slyboots 
Señor Palomar
Rudo Villano
Gabarro 
Mr. Cunningham
Alexis
Lord Sinister
Maharaja Lallu
Indian Palace Guard
Ngan Pa
Chang Wu
Chinese Guards
Wanderer
Mummy 
Achu 
Skeleton 
Professor Kilroy Doctor Kilroy is interested in lost cultures and ancient civilizations. He is the senior professor at the National Museum. He is a bit absent minded and once got lost at the museum. He is also known as Dr. Charles Lightning, Professor Articus and Professor Kilroy (In some countries the title Doctor only describes a person working with human health and disease). 

He has made excavations at the following sites: 2995, 5904/1280, 5913, 5948/5909/2879, 5934, 5956, 5958, 5975, 5976, 5978, 5986, 5987, 5988, 7419 and 9377

I can only guess "Why is Kilroy so hated?", as I personally don't hate him. I think the main reason is his limited usability. If you have several Johnny Thunders, Mr. Hates, Rudo Villanos or Pippin Reads, a small army could be made by giving them different heads. In the same way a flight crew could come from a bunch of Harry Canes. 

But unlike the other figures you can't really use more than one Kilroy. Even at a science convention there wouldn't more than one professor wearing a red bow tie and suspenders. His clothes really makes him stand out. In addition to that his beard and glasses makes him difficult to use in other themes/ages.

Professor Kilroy in India The professor in Jungle outfit
He has discovered the 7411 and when he found 7418 he was wearing his usual green trousers.
Professor Kilroy in India The professor in flying suit
After that he flew on to the Himalayas in the Aero Nomad 7415 and travesed the snowcovred slopes in the new snowscooter model 7423.