Tiamat, The Fiend of Wind from Final Fantasy 1 is not a beast I ever expected to see bound in chains and tickled silly, but here it is and god dammit I think it's adorable. I can only imagine getting into a serious boss fight with this monstrosity, being unable to damage it, only to discover that the fiend is... ticklish? Then imagine Tiamat's embarrassment when the heroes actually manage to subdue her with tickle torture, even making Tiamat surrender because the tickling is so bad she can't take any more. Of course, the heroes are having too much fun tickling her, so even when Tiamat surrenders they just keep tickling her all over, which leads to the great, terrifying fiend literally BEGGING for them to stop tickling her.
As for the second image, I know it was posted here before , but it was posted with really low resolution. Here's the full quality image.