Since Byakuran is usually too lazy doing paperworks, he sometimes crashed to Vongola Lab to hang out with Spanner, Shoichi and Giannini (you know that he used to major in those stuff right?). In the end, he is involved in their invention too.

When those three were done with something and wanting to try it out, and still thinking on what or who should try the new stuff, Byakuran would be like “Ah, you, you there!” on anyone who passed by and tested it on them….even if those passer-bys are the guardians much to Tsuna’s dismay.