Protagonist

The Protagonist is the leader Denpa Man who is in love with Crystal (The Denpa Woman), each time you start a new game a Protagonist is chosen at random between 31 or more I don't know but they are different possibilities (and more in later games).

All of them have the Revive Antenna.

The Protagonists in The Denpa Men: They came by Wave
The different protagonists in alphabetical order are:
 * 1) Aric
 * 2) Arnold
 * 3) Bill
 * 4) Brandon
 * 5) Chester
 * 6) Clifton
 * 7) Dale
 * 8) Eddy
 * 9) Fred
 * 10) Herbert
 * 11) Ian
 * 12) Jackie
 * 13) Jim
 * 14) Jamel
 * 15) Kurt
 * 16) Mackenzie
 * 17) Neal
 * 18) Norman
 * 19) Reggie
 * 20) Robin
 * 21) Rudolph
 * 22) Randolph
 * 23) Stuart
 * 24) Sylvester
 * 25) Teddy
 * 26) Terence
 * 27) Tom
 * 28) Willis

Protagonists in The Denpa Men 2: Beyond the Waves
You still have a chance of getting the old ones, but here are the new ones:
 * 1) Alex
 * 2) Brent
 * 3) Calvin
 * 4) Darren
 * 5) Eugene
 * 6) Lawrence
 * 7) Maurice
 * 8) Seth
 * 9) Tracy
 * 10) Wayne
 * 11) Francisco
 * 12) Hector
 * 13) Kristopher
 * 14) Geoffrey

Protagonists in The Denpa Men 3: The Rise of Digitoll
Here are the New Ones:
 * 1) Brett
 * 2) Chad
 * 3) Garfield
 * 4) Scroo
 * 5) Peter
 * Jon
 * 1) River
 * 2) Nick
 * 3) Ichabod
 * 4) Ernest
 * Dan
 * 1) Siegfried
 * 2) Angelo (interestingly, someone uses Angelo as an oc of sorts in other sorts of media. This Angelo, specifically, is who they use.)
 * 3) Cyril
 * 4) Cecil
 * 5) Luke
 * 6) Diego
 * 7) Akito
 * 8) Jesse
 * 9) Raoul
 * Bob
 * 1) Josh
 * 2) Oliver
 * 3) Otis
 * Joe
 * Joe

Protagonists in New Denpa Men
The New Denpa Men protagonists are not married, since Crystal is absent in the game. There are also some female protagonists.

Starter Denpas:
 * 1) Ryuuta
 * 2) Yuki

Protagonists:
 * 1) Haruto
 * 2) Kazuo
 * 3) Remu
 * 4) Ainosuke
 * 5) Hidemasa

These are all I found for now, I will find more later.