Thread:Tsukikage-dono/@comment-25319479-20160204104756/@comment-27646769-20160204175509

Just because it wasn't named then, doesn't make it an exception. (Joker was named several chapters deep in his appearance. Same with Gustav. And Toru).

Third Generations cannot create flames without resorting to their Ignition Ability. You cannot debunk this because this is a fact given by the manga itself.

Leonardo was shown in a flashback of a different character (so it wasn't a proper debut). Just to elaborate on that.

Chapter 00: "Third Generations can freely ignite (use their ignition ability) and utilise it as their own ability". So they cannot create flames without resorting to their Ignition Ability. Plain and simple, Sarutobii-dono.