The userbox will feature your own name when displayed on your userpage. Cut and paste
{{User:Penyulap/UBX/ISS kibo}}
onto your userpage to get:
If you signed up to wikipedia with the name Lucasisafatpig2020 but now use a different signature, you can enter the name you'd like the template to display. For example, for just Lucas cut and paste
{{User:Penyulap/UBX/ISS kibo|Lucas}}
onto your userpage to get:
..unless your name isn't lucas, or if you don't want the userbox to actually say Lucas, in which case your pretty screwed aren't you, sorry about that, you should have thought of it when you signed up. And don't bother cutting and pasting fancy code from your signature into the box, it has enough color as it is and the extra color would screw things up. (if you know a workaround, let me know), anyhow you can also paste in "This user" if you don't actually have a name, like this:
{{User:Penyulap/UBX/ISS kibo|This user}}
to get: