[courtneypowell]

Shareholder agreements can define 'Unanimous' in any variety of ways. So long as the agreement is approved, it can supersede Deleware shareholder laws.

[bravo22]

Generally speaking laws supersede agreements, not the other way around. That's their whole purpose. Certain things can't be done and certain rights can't be forefit if specifically disallowed by laws

[rayiner]

When it comes to corporate and contract law, many laws are "default rules" that agreements can explicitly override.

[toyg]

Many but not all; and this override usually depends on all parties agreeing at all stages.