- Endeavour stars off the series as 45 years old, his birthday is August 8th, he’s 195cm tall, his weight is 118kg, his blood type is AB, his favourite food is kuzumochi, and he was born near the Shizouka Prefecture.
- While his blood type is AB, Shoto has the blood type O. For this to be realistically possible, Endeavour would have to have a rare genetic mutation known as Cis AB. Having this mutation is the only genetically possible way for a person with an AB blood type to have a child with an O blood type.
- Endeavour’s surname contains the kanji for ‘roar’ (轟 todoroki) while his first name contains the kanji for (炎 en), and ‘boss’ (司 ji). Enji is a common component of male names. When written in the Latin alphabet, Endeavour’s name is also the same name as a fire god in Albanian mythology who was worshipped by the Illyrians. Endeavour’s hero name also means ‘attempting to achieve a goal,’ which is very fitting for him.
- In Endeavour’s original concept, he was an instruction at U.A. Horikoshi got rid of this idea though because having both the 1st and 2nd highest ranking hero’s in Japan as teachers at U.A. would favour Class 1-A too much – since most conflicts the school would face would then be too easy to deal with.
- According to the Ultra Archive, Endeavour’s stats are:
Power 5/5 (A)
Speed 5/5 (A)
Technique 5/5 (A)
Intelligence 4/5 (B)
Cooperativeness 2/5 (D)
While his stats according to the Ultra Analysis are:
Power 6/6 (S)
Speed 5/6 (A)
Technique 5/6 (A)
Intelligence 4/6 (B)
Doting Father 6/6 (S)

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