竜 is a Chinese hanzi, listed here under the keyword “dragon”. It is built from 立 (stand), 日 (sun) and 乚 (hidden). It appears as a component in 3 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “stand” + “sun” + “hidden”. 竜 is among the results, together with every other character containing the same shapes.
Open 竜 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.