[Dumyat]

A few more to throw in the hat

• Match
  
• Magnum
  
• Mint
  
• Moriarty
  
• Mongoose
  

[whysoserious]

Marvel

Megatron

Mxyzptlk

 +1 for Mxyzptlk if only for the spell-check disaster that awaits, and because consonants > vowels, IMHO...

[sergi_calle]

MUTANT
For the turtles and also for the x-men mutants

[Atreyu]

Midgard

[Rumpelstiltskin]

Matrix?

[Klojum]

Mazzeltov

[sala_mander]

Or just 'M' ... as in the MI5 chief and James Bond's director.

[Atreyu]

C'mon everyone with these 'Mega Mindy' suggestions.

We all know it should be Midgard. It runs Eden...!

[skier70]

Muon
Morpheus
Medusa

[tjay260476]

+ 1 for both M and Moneypenny

[lstar337]

Marty, as in Back to the Future.  (Imagine the flux capacitor splash screen) 

I would have said McFly, but that name has been tainted by boy band now.

[lstar337]

Mulder.

[trilithon]

Metropolis - A cult sci-fi movie from 1927: "In 2001, the film was inscribed on Unescos Memory of the World Register, the first film thus distinguished."

Mirage - Character that appeared in Disneys "Aladdin" and "The Incredibles". Beeing a "Fata Morgana"  in the real world that word suits for a program that does optical tricks

[tjay260476]

+1 for Metropolis

@lstar337 and what is wrong with Mcfly? I like their music LOL

[jinux]

Matrix