Reader-added tags include "Identity", "In any case, the outcome is they'll all sing together", and "Strange-voice variant Mr. #21".

The survey's eager to mecha merry with the mic:

Let's sing at karaoke!
• Gundam songs
• Macross songs
• Getter songs
• Hisou Tensoku

(Yep, only four options for a change.)

I believe this is the 4th appearance of Kappa #21.

• 1st: post #1389230
• 2nd: post #1666269
• 3rd: post #1680773
• 4th: this

[deleted]

You gotta love Kappa #21.

For the poll, start out with Hisou Tensoku because it's hot blooded. And then everything else.

#21 lives near Kogasa-san.
That's why he frequently pops up.

For the polls:

Hisou Tensoku, and then Gundam~!

For the pool:

Gundam all the way~!