And if not, would I be able to delete the info box I created?

Not sure what you mean with "not knowing they would automatically be added".

Nothing is automatically added unless you define a value for it when you call the template.

Yes, you can delete the rows, but I honestly don't think that would make sense unless you never want to use name, image, and caption with that infobox, which are kinda key fields for any infobox.

And yes, you can also delete the template, but that seems not to make sense neither.

Please add a link to your template, and describe exactly and in detail what you want it to do and look like.

Just edit the template source to your needs.

Change the parameter names on top.

I suggest something like this:

<title source="title">
  <default>{{PAGENAME}}</default>
</title>
<image source="image">
  <caption source="caption"/>
</image>

Give the section header some meaningful name. Maybe divide the data rows into more groups with their own section titles. Common section titles are "Personal information", "Professional information", "Series information", etc.

You can also remove the "source" part from the header tag, as it does nothing.

Example:

<header>Personal Information</header>

Delete the 2nd image and caption fields further down which are formatted wrong anyway.

Update the example section below the infobox with the correct parameter names.

Update the template-data at the end.

Alternatively, you could edit the existing default character infobox of your wiki to fit your needs instead of creating a new one => Template:Character

This already has some common structure, with groups and section titles.

A template can be deleted like any other page:

Unrelated:

You need to change your dark mode theme. You cannot use the same colors for light and dark mode. Every wiki must have a proper light and dark theme.

Oh, okay. Thanks!