Friend Or Foe? The Third Riser is the fourth episode of the Justirisers series.
- It’s the next day after the third episode.
- Dr. Zora complains that a new hero Justiriser Kageri just transformed and started fighting.
- Morgulis attacks the La Crosse and Mio and Reika.
- Shouta Date transforms into Justiriser Glen again. He fights Morgulis. Then, he gets electrocuted with Morgulis' electic attack.
- When Yuka Sanada nearly transformed, a new Justiriser, Justiriser Gant is the one who shoots Morgulis, and Justiriser Glen went on fighting Morgulis and said "Now, it's payback time." because he gets crusified and electrocuted.
- Shouta Date and Yuka Sanada talks about Justiriser Gant.
- Shinya Hiraga does his robot project.
- Shinya Hiraga helps Kenta bring the computer inside the store.
- Kenta talks to Shouta Date about Shinya Hiraga.
- Yuka Sanada is hot headed with the enemies when they appeared again so she transforms into Justiriser Kageri.
- She fights them.
- But later, Shouta Date transforms into Justiriser Glen again. He and Yuka are friends and allies. They are fighting Morgulis.
- Then Riser Gant appears and shoots and proves himself as the third Justiriser, Justiriser Gant . He uses Versus Cannon to kill Morgulis.
- The three Justirisers talk about how Shinya Hiraga/Justiriser Gant appeared to the store and the battle. Shouta Date said that Shinya went to Gentarou's store. They are happy with him as a new Justiriser. If he didn't appear, Morgulis would still continue staying alive and evil.
- Shouta Date/ Riser Glen
- Yuka Sanada/ Riser Kageri
- Shinya Hiraga/ Riser Gant
- Mio Tendo
- Reika Motomiya
- Gentarou Date
- Rio Matsubara
- Asami Segawa
- Kaiser Hades
- Doctor Zora
- Cyber Knight Morgulis
- This is the fourth episode to feature Sun as the ending song.