arcgis desktop - Combining 2+ tables in ModelBuilder into just 1 supertable?

This might be a stupid question but is it possible to add multiple tables in ArcGIS Modelbuilder together? Just add 2 tables together, like a spreadsheet list without a common factor? I have been googling this for ages and all the methods seems to require some common factor?

For example:

Table 1: x | 2 z | 5

Table 2: a | 10 c | 13

Combined Supertable: x | 2 z | 5 a | 10 c | 13