Bitmap on Android ImageView not displaying as it should

I have two bitmaps that I have placed the character at the bottom right corner of the bitmap. However, I see that upon changing container height of the imageview whose android:src equals the bitmap, the character in the bitmap does not appear at the bottom of the imageview. I expect the character to appear at the very bottom of the imageview.

Here is how I define the imageview:

<ImageView
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:id="@+id/rolling_monsterview"
        android:elevation="6dp"
        android:adjustViewBounds="true"
        android:src="@drawable/demon_animation_list"

        app:layout_constraintStart_toStartOf="@id/helpery_view"
        app:layout_constraintEnd_toEndOf="@id/t9"
        app:layout_constraintTop_toTopOf="@id/t6"
        app:layout_constraintBottom_toBottomOf="@id/t9"
        />

I expect the character to appear at the bottom right corner of view t9! On one bitmap src the character appears at the right corner of view t9 BUT on the another bitmap src IT DOES NOT!

How can I make sure the character, regardless of bitmap used, always appears at the bottom right corner?

Here are two PNGS that show what I am talking about:

I have tried android:scaleType="centerCrop" and yes it does place the character at the bottom right corner of the imageview as it appears in the bitmap png file. But, it seems that I have to adjust the scaletype and png file size depending on the Android device. But, that would just take lots of testing and time! Is there a more straight-forward way of doing this?