Look at astrid in the last gif. The encouragement in her eyes and how she mouths ” good” at him. He used to be so insecure and unable to stand up for himself and she’s helped him past it. Their relationship is beautiful.
Yeah thats great but lets not forget Stoick. Stoick is a big part of this scene, in this case, we see look in his face of disbelief towards Hiccup, in his mind he knows that Hiccup will be unable to convince Drago, “A man who kills without reason cannot be reasoned with”. Just like we saw in the flim, how Drago kills the leaders and that Stoick who was the only survivor from the fire. Stoick tries to manage and convice Hiccup that he will be unable to do so, but the more Stoick says no, the more Hiccup will try to reason with Drago. These two relationships are wonderfully well animated.
Not to mention Astrid, who totally agrees with Hiccup and she knows that that he is an excellent persuader and that maybe, he could be able to change Drago’s mind.