If it's just for a logo, you don't need a font, you just need a vectorial draw.
It's easier to do.
It's impossible to answer to your question.
It's a question of law and the law is different in each country.
For exemple, in France, it's impossible to modify an artwork without the permission of the author.
To be sure, the best is to ask the author of font.
Look at the two "H" very different.
It's not a font.
It's very close Arial condensed bold
Roboto is a clone of Helvetica.
Comic Sans, one of the standar fonts of Windows
Cooper Black Italic with à T and D modified.
Modificato su 17/01/2017 alle 12:33 da Menhir
Fourni en standard avec Windows
Read the previous messages.

Have you installed the font ?
http://www.dafont.com/faq.php#win
Modificato su 16/01/2017 alle 11:03 da marty666
Fuso orario: CEST. Ora sono le 17:04