[link contains cute vid footage of FM as toddler]
Mae un o ffrindiau gorau dyn ifanc o Fôn sydd wedi bod ar goll ers bron i fis wedi erfyn ar bobl sydd yn gwybod unrhyw beth i rannu'r wybodaeth gyda'r heddlu.
Mae Frantisek "Frankie" Morris, 18 o Landegfan, Sir Fôn wedi bod ar goll ers 2 Mai.
Cafodd ei weld ddiwethaf ar luniau camera cylch cyfyng tafarn y Vaynol Arms, Pentir, yn gwthio ei feic ychydig wedi 13.00. Cafwyd hyd i’r beic yn ddiweddarach.
Wrth ddisgrifio ei ffrind, dywedodd Llawen Haf Pierce fod gan Frankie "freuddwydion" am y dyfodol.
"Mae'n hogyn really neis, mae'n haeddu'r byd," dywedodd Llawen.
"Ag oedd gyno fo i gyd o'r plans 'ma, breuddwydion 'ma ag on ni'n meddwl oedd o am neud o ag, nath o ddim.
"So, ie ma'n anodd.
"Dwi 'di bod yn ffrindia hefo fo ers odda ni’n fabi, ag - ia mae'n anodd oherwydd tro cynta nath o ddod drosodd o Czech, mond fi a hogan arall oedd ffrindia fo, doedd neb arall yn nabod o ar y pryd, a dwi'n cofio nath o ddod drosodd ag oedd o mor gyffrous i weld ni.
"Oedd o'n hwylus ofnadwy, oedd o wrth ei fodd yn mynd o gwmpas y mynyddoedd. Oedd o'n hoffi darganfod llefydd newydd."
Mae Llawen wedi disgrifio'r cyfnod ers i Frankie fynd ar goll fel hunllef.
"Dwi'n cofio nath mam fi gyrru text i fi pan on ni ar y ffordd i'r coleg yn dweud: 'Oh, Frankie might be missing. You might want to share this post on Facebook'," ychwanegodd.
"Oni'n shocked ond o ni'n meddwl, fysa fo ddim yn ddrwg oherwydd fysa Frankie ddim yn mynd i ffwrdd fel 'na.
"So nes i edrych ar Facebook ac oedd 'na fatha posts 'ma yn deud 'Search for a missing boy' ag on i 'tha reit ocê, so on ni'n rhannu bob dim ar Facebook a Instagram a bob dim, oherwydd dwi'n ffrindia' hefo fo.
"Ti 'sho ffeindio dy ffrind dwyt. Ond do' ni ddim yn meddwl 'sa fo'n cario mlaen mor hir a hwn. O ni'n meddwl fysa nhw di ffeindio fo'n fyw.
"Ti'm yn siwr be' i goelio dim mwy oherwydd ma' 'na mor gymaint o possibilities."
Mae Heddlu Gogledd Cymru yn parhau i chwilio am wybodaeth.
Google Translation (some words seem a bit wrong!):
One of the best friends of a young man from Anglesey who has been missing for nearly a month has urged people who know anything to share the information with the police.
Frantisek "Frankie" Morris, 18 from Llandegfan, Anglesey has been missing since May 2.
He was last seen on CCTV footage of the Vaynol Arms, Pentir, pushing his bike just after 13.00. The bike was later found.
Describing his friend, Merry Summer Pierce said Frankie had "dreams" about the future.
"He's a really nice guy, he deserves the world," Merry said.
"As he had all of these plans, dreams that I thought he wanted to do with him, nothing.
"So, yes, this is difficult.
"I've been friends with him since we were a baby, and - it's difficult because he first came over from Czech, just me and another girl he was friends with, no one else knew him when, and I remember that he came over as he was so excited to see us.
"He was a terrible user, he loved going around the mountains. He liked finding new places."
Glad to describe the time since Frankie went missing as a nightmare.
"I remember my mother sent me a text when we were on the way to college saying: 'Oh, Frankie might be missing. You might want to share this post on Facebook'," he added.
"Not shocked but we thought, it wouldn't be bad because Frankie wouldn't go away like that.
"I didn't look at Facebook and then there were posts saying 'Search for a missing boy' and I was quite right, we don't share everything on Facebook and Instagram and everything, because I'm friend with him.
"You got to find your friend. But we didn't think he'd carry on this long. We thought they'd find him alive.
"I'm not sure what to believe any more because there are so many possibilities."
North Wales Police are still looking for information.
‘Roedd gan Frankie’r holl freuddwydion - mae’n haeddu’r byd’