Actor and former California Gov. Arnold Schwarzenegger sees Scott Pruitt as the worst administrator the Environmental Protection Agency has ever had.

While speaking at his R20 Austrian World Summit, an annual climate conference, the "Terminator" star and moderate Republican said that he can’t take Pruitt seriously.

"I pay no attention to what he says. He can not be taken seriously. He’s the worst Environmental secretary that we have ever had." Schwarzenegger said, according to Vice News , while also accusing Pruitt of “doing the bidding for oil companies and the coal companies” with his policies.

In his speech, Schwarzenegger also called on President Trump’s administration to join him in fighting climate change, despite Trump's decision to withdraw from the Paris climate accord.

Pruitt's travel and security expenses have become the subject of several investigations underway by the agency's inspector general. Amid the controversy, Democrats and a handful of Republicans in Congress have called on him to resign or be fired.

In February, Schwarzenegger said Pruitt should be "removed immediately" as EPA head.