Issac

Name and Titles
Doctor Issac ____ is a mycologist turned politician and the main antagonist of the story.
Issac refers to himself by his codename "Mycorrhiza." 
A winged-human research scientist with a specialization in fungi. Issac like Amber is a green-grower. However years of mind-jumping and seeing terrible things has made him gone mad.
History
Issac worked for a goverment sanctioned research facility. Which was known to the public as a prison and mental institution for the criminally insane. With most of the subjects either being used as test subjects for having "non-normal" traits.
One such subject S-395 was showing signs of the fruiting body of fungus during bits of manic madness with a vocal and extreme form of hatred towards fellow human life. Upon closer inspection of subjects blood saw exposure to millions of spores being present. An MRI scan further revealed a network of non-humans biological tissue growing within the subjects whole body. 
Both of these discoverers lead to the assignment of Doctor Issac who began interviews of subjects S-395 on xx-xx-xxx with the intent of making sense of the chaotic babel that the subject was speaking. Precautions were taken to ensure exposure would not happen until the doctor convinced by the subjects 'arguments' broke containment with the intent of infection. Subject S-395 is terminated during hostile re-containment attempts by which but the doctor himself is subdued. 
Similar precautions are put in place upon interviews with the Doctor because the presence of spores became present in his blood. In similar fashion to S-395 Issac expresses manic and disgust towards conscious life. However an added sense of grandiosity and scale is stressed to the method that the doctor now calls his cure. It wasn't enough for him to die like the those before him but for everyone else had to die if Terra was to heal.
The initial time that Issac escaped was because of an unknown prior relationship between between Issac and a pregnant Doctor ___ the future mother of Amber. Convincing her to beat an Agent over the head and release Issac from his chamber so they could flee to the surface. However they are intercepted by pursing agents who re-capture Issac but fail to notice the baby girl being passed off from a dying Doctor ___ off to a family friend in the young Samuel. 
Meanwhile Doctor ___ begins to go through labor 
Nurse ___ who was tasked with taking care of Doctor Issac and sterlieaizling his chamber. 
The second time 
The research facility had underestimated what it was like to contain an employee. Agent ____ who had been drinking a cup of coffee every day while interviewing didn't notice spores forming from the ceiling fall into his drink. Revealing a fruiting body of his own he opens the door for Doctor Issac while he goes out to collect some 'associates' and break free. 
The first thing he does is immediately go to press in order to create a fire-storm and develop a form of protection from the contentment agents. And announce his candidacy for Prime Minister of the Republic of Heaven during an election year. Issac then embarks on a quest to transform most of the resistance he comes across into fungi infested docile servants dreaming to one day die.