Because of his mutation, it is no surprise that Harold is afraid of fire. Given Harold's new found ability to 'see' through these trees that are descended from Bob through the use of extreme concentration, it may not be much of a stretch to suggest that both are deeply linked in some unknown way, almost certainly as a result of FEV exposure. And once a year Bob gives off seeds, and these grow and became the Oasis. (I think to get out of the NCR.) He ended up in the Capital Wasteland where Bob ended up growing roots through him into ground forcing him to stay in place. Here a YouTube video by Shodd圜ast that explain it Sometime after 2241 (Fallout 2) Harold began to trilling again. He told the Lone Wanderer how he became like this. Then he told the Lone Wanderer that his name is Harold and Tree name is Bob.
Is actually a man with a tree growing out of him, He told the Lone Wanderer he doesn't know why the Treeminders make people do that stupid ritual. After during the Treeminders' ritual to meet 'He,' the Lone Wanderer is placed in the Grove, where he discover that the 'He' that Treeminders were talking about.
