Upon TMNT's first arrival in the 
United Kingdom, 
Ireland, 
Sweden, 
Norway, 
Finland, 
Poland, 
Austria, 
Germany, and some other countries in 
Europe, the name was changed to "Teenage Mutant 
Hero Turtles" (or TMHT, for short), since local 
censorship policies deemed the word 
ninja to have excessively violent connotations for a children's program (in Ireland, however, the first season aired as "Teenage Mutant Ninja Turtles" before changing to "Teenage Mutant Hero Turtles").
[43] Consequently, everything related to the Turtles had to be renamed before being released in these nations (comic books, video games, toys, etc.) The lyrics were also changed, such as changing "Splinter taught them to be 
ninja teens" to "Splinter taught them to be 
fighting teens."