Okayy... first panel is a direct reference to Ep 4 of Gundam Unicorn (At the Bottom of the Gravity Well), in the scene at the Papua New Guinean jungle (after the desert scenes) where a Zeon remnant comms officer receives a coded message. Speech is nearly line-for-line the same too, with one noun switched out (Feds → Lass).
2nd panel is definitely a reference to some other scene... think I saw it before but I can't remember. When the Hygogg makes its first appearance in 0080 Pocket War, maybe?
3rd panel... hmm... that mask is from Daryl's custom Acguy, as previously mentioned, but those lines of G-Sp— MASKED GODDESS seem to remind me of what Zechs Marquise said when he came back to work for the Preventers... but I can't track down the relevant scene and lines.
Edit: Confirmed, 3rd panel line (after the ellipses) is from Zechs Marquise when he takes up the identity of "Preventer" Wind. The part before... is likely also a reference to some other line, but a lot of Gundam Wing characters say something similar (heck, a lot of Gundam characters say something similar), so I'm not sure which one it is.
This entire page is loaded with so many references.
Edit2: Though definitely not Trowa though, because he uses another word. 名無し, or "nameless". It's kinda his shtick.
Updated
I am no one...
But if you must call me a name...
"Masked Goddess" shall suffice for now.
Wait!
Who are you—!?
It's a code... an old watchword!?
"Help our cause...?"
"Let's give the Lass a shock! ...She won't expect what's next!"
Scene ref:
Gundam Unicorn, Ep. 4.
TL tweaked to better match the lines in the dub.