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DC's Stargirl -- "Summer School: Chapter Nine" -- Image Number: STG209a_0098r.jpg -- Pictured (L-R): Ethan Embry as Johnny Thunder and Joel McHale as Sylvester Pemberton/Starman -- Photo: Kyle Kaplan/The CW -- © 2021 The CW Network, LLC. All Rights Reserved.

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DC's Stargirl -- "Summer School: Chapter Nine" -- Image Number: STG209b_0199r.jpg -- Pictured (L-R): Lou Ferrigno Jr as Rex Tyler/Hourman, John Wesley Shipp as Jay Garrick/The Flash, Joel McHale as Sylvester Pemberton/Starman, Brian Stapf as Ted Grant/Wildcat and Luke Wilson as Pat Dugan -- Photo: Kyle Kaplan/The CW -- © 2021 The CW Network, LLC. All Rights Reserved.

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DC's Stargirl -- "Summer School: Chapter Nine" -- Image Number: STG209fg_0001r.jpg -- Pictured: Trae Romano as Mike Dugan -- Photo: The CW -- © 2021 The CW Network, LLC. All Rights Reserved.

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DC's Stargirl -- "Summer School: Chapter Nine" -- Image Number: STG209fg_0002r.jpg -- Pictured (L-R): Hunter Sansone as Cameron Mahkent -- Photo: The CW -- © 2021 The CW Network, LLC. All Rights Reserved.

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DC's Stargirl -- "Summer School: Chapter Nine" -- Image Number: STG209fg_0003r.jpg -- Pictured (L-R): Luke Wilson as Pat Dugan and John Wesley Shipp as Jay Garrick/The Flash -- Photo: The CW -- © 2021 The CW Network, LLC. All Rights Reserved.

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DC's Stargirl -- "Summer School: Chapter Nine" -- Image Number: STG209fg_0004r.jpg -- Pictured: Joel McHale as Sylvester Pemberton/Starman -- Photo: The CW -- © 2021 The CW Network, LLC. All Rights Reserved.

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DC's Stargirl -- "Summer School: Chapter Nine" -- Image Number: STG209fg_0005r.jpg -- Pictured: Joel McHale as Sylvester Pemberton/Starman and Luke Wilson as Pat Dugan -- Photo: The CW -- © 2021 The CW Network, LLC. All Rights Reserved.