Repeated username

Hi, my username is Linkdude114 and I usually play on my android device (lvl 89 fighter), but i've recently created another account on my ipod (4g if it changes anything) and i forgot that my nickname was such,  beacuse i use different nicknames a lot in games, so i named the account the same. Could this bring any problem? If so, could i delete my most recently created account (lvl 9 fighter)?

Thanks in advance

No, no problem.