Originally posted by aztec
Mmm, very interesting. I've always considered Motherboxes to be versatile, but never understood them quite well until you described them. So basically what your saying is that they amp the characters abilities?
It can amp, but more often it supplements.
For example, Orion's box contains his rage, masks his true harsher appearance as Darkseid's son, and help increase his healing ability when hurt (as well as often doing various one-off tasks). When given to Oracle, it upgraded her computers and iirc gave her technopathy, and when given to Steel when he was on a planet of evil telepaths, it created a mind-shield for him so he could act without being detected.
Mr. Miracle's box helps him plan his escapes and run the various gadgets he caries. The Tomorrow People used their box to harness their powers to summon Infinity Man, as well as a variety of utilitarian one-off purposes. At one point when Shazam was on New Genesis, Captain Marvel was given one so he could access Shazam's lightning despite being in a different dimension.
And any Motherbox could do any of that and more (though not at once. Versatility is much higher than multi-tasking).
In short, they do what is needed for their holder.
The first thing that comes to mind when I think of Motherboxes is Granny Goodness in the "Rock of Ages" story arc by Grant Morrison. Her life essense, or something like that was one with the motherbox.
Ah yes, that would be the "Grandmother Box". Rather atypical, true Motherboxes are universally good.
Similarly, there's a Fatherbox Darkseid made as a darker copy to a motherbox, and another unrelated Fatherbox that is one of the seven treasures left to Earth's first superheroes by New Genesis. Iirc, that fatherbox gave a girl Zatanna-like powers.