Johan Jacobsen

Johan Jacobsen is a zoologist and an international authority on endangered species.

Early life and career
Jacobsen was an academic friend of Dr. Drago Pettrovich Madnar during their college years. He began his career as a member of Green Peace. He then worked as vice chairman for the Society for the Prevention of Cruelty to Animals and served as a biology adviser for Maxwell magazine. He had also heard about FOXHOUND's exploits, although he was confused as to why they used animal codenames when conducting operations, feeling that animals weren't inherently warlike.

During Operation Intrude F014, Jacobsen was near Zanzibar Land conducting research on the desert wildlife of the Middle East. Solid Snake learned his radio frequency from Dr. Madnar during his mission and often contacted him when dealing with animal matters. While discussing these, Jacobsen would often bring up the topic of food, in relation to the subject of the conversation.

Behind the scenes
Johan Jacobsen (ヨハン・ヤコブセン) was originally named Yozef Norden (ヨゼフ・ノルデン) in the MSX2 version of Metal Gear 2: Solid Snake. His name was changed in the re-released versions of the game.

It is speculated that Norden's appearance in the original MSX2 version of Metal Gear 2 is based on either Donald Pleasence or Danny DeVito.