Saying goodbye to those apps you never wanted to begin with.
Let's be honest — the ASUS ZenFone 2 ships with a lot of applications that many of us are never going to use, and never wanted in the first place. A few of them are essential, like the dialer and messaging app for dual-SIM users, and others are done well and worth keeping if you're going to want the functionality they bring to the table. Always look at an app before you try to nuke it out of existence.
It's not that these apps use precious space (at least for most of us). The ZenFone 2 ships with up to 64GB of storage space — and that's the better value version and the one you should be getting if possible — and these apps are all small. Depending on where they are installed, you might not gain any application storage space anyway.
It's that they are sitting in your app drawer, never to be used, waiting for that day when you tap the icon by mistake. If you're like me and don't care about the small bit of storage you're going to gain, you still want them gone to reduce the clutter.
That's easy to do, and there are two ways to go about it.

Hide them all in the launcher 

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The Zen UI launcher has a lot of options, and plenty of us have no problems using it. ASUS does a fine job keeping the UI components updated, and generally, things are smooth and work well. You have options in the application drawer, too. One of which it to hide apps you don't want to see.
Open the app drawer, and tap the three dots in the upper right. You'll see a list of options, one of which is to "Hide apps." Give it a tap.
Choose which applications you want hidden in the app drawer by tapping the icon. You'll see a checkbox on the icon's upper right to let you know it's been selected. When you're finished choosing which applications to hide, press "Done" in the upper right.
To unhide any app (we all change our minds sometimes) open the "Hide apps" setting again, and scroll over to the far right. Uncheck the app you want to see again.
Remember, this only hides the apps. They stay installed, will still be updated, and will still function if you need them to.

Just get rid of them


Most of the apps in question can be flat out uninstalled. If you are never going to use them, and you want them gone gone, this is your option. You use Android's application manager to do it.
You can get to the application manager in the device settings, aptly titled Apps. Open it, and you'll see a few tabs showing apps you downloaded, apps that are running, apps that can be moved to the SD card, and All apps. Browse through the lists, and when you see an app you want to make disappear, tap it. At the top, you'll see a button to Force Stop the app, and possibly a button to uninstall or disable the application.
Uninstall means just what you think it means. The app is removed from your user data, and the only way to get it back is to install it again or to factory reset the phone.
Disabled apps are frozen in time, never to use any resources or app drawer real estate again.
Some apps — especially "extensions" of the actual UI — can't be disabled or uninstalled without rooting your phone. They need to be there so that features work as intended. For those, scroll up and hide the suckers so you never have to look at their icons again.

Mostly, all Android phones work the same way when it comes to removing apps you don't want or need. You just need to find the right place to get to the setting, and this is how to go about it with the ZenFone 2.