If you have a Pokemon with ability magma armor etc. your eggs will hatch faster!
you have to get the national dex first;)
You can't get eggs faster but you can hatch them faster by having a Pokemon that has the Flame Body ability.
You get a Pokemon with the ability "Magma Armor"
You can't make the eggs hatch faster, but you can play Pokemon Crystal Version on the Nintendo 64 with Pokemon Stadium 2 which has an option to increase the gamespeed.
Walk with energetic Pokemon Walk with energetic Pokemon
yes
Litwick
It depends on the Pokemon that is inside the egg, some Pokemon need more time to hatch. But you can always use Action Replay to make eggs hatch faster.
It is an ability that helps hatch eggs. If you have a Pokemon in your party while carrying and egg, the egg will hatch faster.
Use a Pokemon with the ability magma armor or flame body (Slugma's ability usually)
It depends on the egg your hatching, but its usually around 2,000 - 5,000 steps. The fastest way to hatch it is to literally ride on your bike (: -Chii Magmar + Bike your egg will hatch within 5-10 mins.
In Platinum, you can have the egg in your party with a Pokemon that has Magma Armor or Flame Body to halve the amount of steps you have to take