My Hero Academia Wiki
My Hero Academia Wiki

Sirius (シリウス Shiriusu?) is a Pro Hero working as a sidekick on the Oki Mariner under Captain Selkie.


Sirius is a young woman with smart blue eyes, sloping inwards, and short, shoulder-length hair of a lighter blue color which she wears side swept to the right.

Her hero costume consists of a sleeveless white sailor uniform with a dark blue, double-trimmed collar and a short 3-piece skirt which is buttoned together on either side. She wears a loosely-tied red scarf and blue gloves with white striped wrist guards, and on her feet, thigh-high boots with wavy lines running down them from thigh to toe. She sports a flat hat with a ribbon around the base and two large communication devices on her ears to aid with the use of her Quirk, which are shaped like large, blue fins.


Sirius appears to be a generally friendly individual who was keen on teaching Tsuyu Asui the importance of becoming a hero. She is highly respectful of her Captain, although she is constantly embarrassed by his attempts to look cute. Sirius is selfless and would have rather been killed by Innsmouth than allow him to escape.[1]


Morse Code: Sirius can understand Morse code, having received and interpreted coded messages from Selkie using his Quirk.


Good Ear (グッドイヤー Guddo Iyā?): Sirius' Quirk allows her to hear high frequencies and quiet sounds that normal people cannot. This allows her to communicate with Selkie, even when they are far distances apart.[1]


Earpieces: Sirius always wears a fin-shaped Earpieces that she uses in combination with her Quirk to communicate with her teammates.

Steel Baton: Sirius carries with her a retractable steel baton that she uses when she has to engage battle. She hides the weapon in her clothes so she can attack by surprise.

Battles & Events

Battles & Events

Anime Appearances

Season 2
14. That's the Idea, Ochaco Absent
15. Roaring Sports Festival Absent
16. In Their Own Quirky Ways Absent
17. Strategy, Strategy, Strategy Absent
18. Cavalry Battle Finale Absent
19. The Boy Born with Everything Absent
20. Victory or Defeat Absent
21. Battle on, Challengers! Absent
22. Bakugo vs. Uraraka Absent
23. Shoto Todoroki: Origin Absent
24. Fight on, Ida Absent
25. Todoroki vs. Bakugo Absent
26. Time to Pick Some Names Absent
27. Bizarre! Gran Torino Appears Debut
28. Midoriya and Shigaraki Absent
29. Hero Killer: Stain vs U.A. Students Absent
30. Climax Absent
31. The Aftermath of Hero Killer: Stain Absent
32. Everyone's Internships Appears
33. Listen Up!! A Tale from the Past Absent
34. Gear up for Final Exams Absent
35. Yaoyorozu: Rising Absent
36. Stripping the Varnish Absent
37. Katsuki Bakugo: Origin Absent
38. Encounter Absent
Season 5
89. All Hands on Deck! Class 1-A Absent
90. Vestiges Absent
91. Clash! Class A vs. Class B! Absent
92. Make It Happen, Shinso! Absent
93. Operation New Improv Moves Absent
94. Foresight Absent
95. Match 3 Absent
96. Match 3 Conclusion Absent
97. Early Bird! Absent
98. That Which Is Inherited Absent
99. Our Brawl Absent
100. The New Power and All For One Absent
101. Have a Merry Christmas! Absent
102. Off to Endeavor's Agency! Absent
103. One Thing at a Time Absent
104. Long Time No See, Selkie Appears
105. The Hellish Todoroki Family Absent
106. The Unforgiven Absent
107. More of a Hero Than Anyone Absent
108. My Villain Academia Absent
109. Revival Party Absent
110. Sad Man's Parade Absent
111. Tenko Shimura: Origin Absent
112. Tomura Shigaraki: Origin Absent
113. The High, Deep Blue Sky Absent


  • Sirius's English voice actor, Emily Neves, also voices Eri.


  1. 1.0 1.1 My Hero Academia Anime: Episode 32.

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