Forrest Clark, 51, was heard shouting, "that's a lie!" and "correct" as the judge read the charges against him.
"I wasn't really surprised with anything we saw. I think it's just par for the course," said Jeffrey Kirk, with the Orange County District Attorney's Office.
The Orange County District Attorney charged Forrest Gordon Clark with aggravated arson, arson of inhabited property, arson of forest, criminal threats, resisting and deterring an executive officer and arson burning multiple structures.
Earlier Friday, PETA requested a cruelty to animals charge be added against Clark because of the wildlife that have lost homes in the blaze.
His bail was set for $1 million, to which he replied he "can have a million right now."
The fire Clark is accused of starting in Trabuco Canyon has charred more than 18,100 acres. It was just 5 percent contained as of Friday.
Communities across Riverside and Orange counties have been forced to evacuate.
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Shane Sherwood with the Orange County Fire Authority said no witnesses have come forward saying they saw Clark start the fire, but the area of origin is around his residence.
RAW VIDEO: Forrest Clark detained by sheriff's officials
Clark has reportedly had conflicts with his neighbors for years and sent an email warning, "This place will burn" to a volunteer fire chief last week.
The OCFA would not comment on those claims, citing the pending investigation.
Of the 14 cabins in his area of the fire, Clark's is apparently the only one still standing. Tillson Shumate, said he owns a cabin nearby and claims to be Clark's friend.
"He's threatened to bring the whole world down on OC and he's very worried about his mother's protection," he said.
People who know Clark said he had an ongoing feud with one neighbor and his erratic behavior. Sheriff's deputies also placed him on a psychiatric hold just two weeks ago.
His arraignment was continued to Aug. 17. If convicted, Clark could face life in prison.