Ruby:

• initial code is incorrect, the definition of the method should be def self.get_quote(quotes,hero)
• the string index of the quote can be formed by several digits in hero, which contradicts the kata's specification.

Ruby 3.0 should be enabled.

• not enough tests
• needs random tests

(python at least)

The Joker sometimes replaces more than one character in their names. The instructions should explain that since that tripped me up.

Why are the JS/Python/Ruby variants written in OOP style instead of the usual function style? I guess that the original kata was in Java, where you have to use a (static) method, but in the other languages it's rather verbose.