Hi from another Australian : )

Cute baby bun you have there!

Most rabbits that end up in shelters are mix breeds. Knowing exactly what’s in the mix is always a guessing game.
His ears might even lop yet! If that happens, I think he’d be a dwarf lop (called a Mini Lop in the US)
You get a better idea of possible breeds once they are fully grown and you know their adult weight and body shape.

I can tell you he will likely change colour quite a bit. The dark shade on his nose will probably cover more of his face and his ears darken to that colour too. Often the legs get the shading too. Like a Siamese cat.

If you look up images of “sooty fawn” it will give you an idea of the colour he might become.

Awwww I love the name Pikachu!!! But then again I am part of the Pokemon generation.
Pikas are also another type of lagomorph (the scientific order bunnies belong to) so it fits in that respect as well.

As far as bonding goes, nothing beats good old bribery. Hand feed it lots of healthy treats to buy his or her love. If you have a room that he or she is allowed free roam time, it is good to sit on the floor and let him/her come up and investigate you at its own pace.

Welcome to Binky Bunny!

Bonding with your bun takes time. Some bunnies take longer than others. The best thing to do is spend lots of time at his level. Sit on the floor, watch tv or read and just ignore bunny. When he comes over, don’t try to pat him at first, just let him check you out and realize you are never going to be a threat. You can have some small treats or pellets to offer him. Try not to handle him unless necessary as this is upsetting to most bunnies.

What a sweet little bun! And I love the name Pikachu! Welcome to the forum!