A: The effect of "Onomatopaira" allows you to add up to 2 monsters from your Deck to your hand, but only 1 from each category listed. Since "Utopic Onomatopoeia" is treated as a "Zubaba", "Gagaga", "Gogogo", and "Dododo" card, and is in each category listed, you can add 2 copies of it to your hand with the effect of "Onomatopaira".[2]
A: "Utopic Onomatopoeia" is always treated as a "Gagaga" monster, so even if you Special Summoned it with the effect of "Gagaga Head", as in this scenario, you can use it as material for an Xyz Summon with "Gagaga Magician".[3]